Jiaozhi in the context of "Baiyue"

Between the Roman Empire and the Han dynasty, as well as between the later Eastern Roman Empire and various successive Chinese dynasties, there were (primarily indirect) contacts and flows of trade goods, information, and occasional travelers. These empires inched progressively closer to each other in the course of the Roman expansion into ancient Western Asia and of the simultaneous Han military incursions into Central Asia. Mutual awareness remained low, and firm knowledge about each other was limited. Surviving records document only a few attempts at direct contact. Intermediate empires such as the Parthians and Kushans, seeking to maintain control over the lucrative silk trade, inhibited direct contact between the two ancient Eurasian powers. In 97 AD, the Chinese general Ban Chao tried to send his envoy Gan Ying to Rome, but Parthians dissuaded Gan from venturing beyond the Persian Gulf. Ancient Chinese historians recorded several alleged Roman emissaries to China. The first one on record, supposedly either from the Roman emperor Antoninus Pius or from his adopted son Marcus Aurelius, arrived in 166 AD. Others are recorded as arriving in 226 and 284 AD, followed by a long hiatus until the first recorded Byzantine embassy in 643 AD.

The indirect exchange of goods on land along the Silk Road and sea routes involved (for example) Chinese silk, Roman glassware and high-quality cloth. Roman coins minted from the 1st century AD onwards have been found in China, as well as a coin of Maximian (Roman emperor from 286 to 305 AD) and medallions from the reigns of Antoninus Pius (r. 138–161 AD) and Marcus Aurelius (r. 161–180 AD) in Jiaozhi (in present-day Vietnam), the same region at which Chinese sources claim the Romans first landed. Roman glassware and silverware have been discovered at Chinese archaeological sites dated to the Han period (202 BC to 220 AD). Roman coins and glass beads have also been found in the Japanese archipelago.

Đại Việt (大越, IPA: [ɗâjˀ vìət]; literally Great Việt) was a Vietnamese monarchy in eastern Mainland Southeast Asia from the 10th century AD to the early 19th century, centered around the region of present-day Hanoi. Its early name, Đại Cồ Việt, was established in 968 by the ruler Đinh Bộ Lĩnh after he ended the Anarchy of the 12 Warlords, until the beginning of the reign of Lý Thánh Tông (r. 1054–1072), the third emperor of the Lý dynasty. Đại Việt lasted until the reign of Gia Long (r. 1802–1820), the first emperor of the Nguyễn dynasty, when the name was changed to Việt Nam in 1804. Under rule of bilateral diplomacy with Imperial China, it was known as Principality of Giao Chỉ (chữ Hán: 交趾) (975–1164) and later Kingdom of Annam (chữ Hán: 安南) (1164–1804) when Emperor Xiaozong of Song recognized Đại Việt's independence and upgraded its status from principality to kingdom.

Đại Việt's history was divided into the rule of eight dynasties: Đinh (968–980), Early Lê (980–1009), Lý (1009–1226), Trần (1226–1400), Hồ (1400–1407), and Later Lê (1428–1789); the Mạc dynasty (1527–1677); and the short-lived Tây Sơn dynasty (1778–1802). It was briefly interrupted by the Hồ dynasty (1400–1407), which changed the country's name to Đại Ngu, and the Fourth Era of Northern Domination (1407–1427), when the region was administered as Jiaozhi by the Ming dynasty. Đại Việt's history can also be divided into two periods: the unified state, which lasted from the 960s to 1533, and the fragmented state, from 1533 to 1802, when there were more than one dynasty and several noble clans simultaneously ruling from their own domains. From the 13th to the 18th century, Đại Việt's borders expanded to encompass territory that resembled modern-day Vietnam, which lies along the South China Sea from the Gulf of Tonkin to the Gulf of Thailand.

The Zhuang languages (/ˈdʒwæŋ, ˈdʒwɒŋ/; autonym: Vahcuengh, Zhuang pronunciation: [βa˧ɕuːŋ˧], pre-1982: Vaƅcueŋƅ, Sawndip: 話僮, from vah, 'language' and Cuengh, 'Zhuang'; simplified Chinese: 壮语; traditional Chinese: 壯語; pinyin: Zhuàngyǔ) are the more than a dozen Tai languages spoken by the Zhuang people of Southern China in the province of Guangxi and adjacent parts of Yunnan and Guangdong. The Zhuang languages do not form a monophyletic linguistic unit, as northern and southern Zhuang languages are more closely related to other Tai languages than to each other. Northern Zhuang languages form a dialect continuum with Northern Tai varieties across the provincial border in Guizhou, which are designated as Bouyei, whereas Southern Zhuang languages form another dialect continuum with Central Tai varieties such as Nung, Tay and Caolan in Vietnam. Standard Zhuang is based on the Northern Zhuang dialect of Wuming.

The Tai languages are believed to have been originally spoken in what is now southern China, with speakers of the Southwestern Tai languages (which include Thai, Lao and Shan) having emigrated in the face of Chinese expansion.Noting that both the Zhuang and Thai peoples have the same exonym for the Vietnamese, kɛɛu, from the Chinese commandery of Jiaozhi in northern Vietnam, Jerold A. Edmondson posited that the split between Zhuang and the Southwestern Tai languages happened no earlier than the founding of Jiaozhi in 112 BC. He also argues that the departure of the Thai from southern China must predate the 5th century AD, when the Tai who remained in China began to take family names.

The Trưng sisters, known in Vietnamese as Hai Bà Trưng (Vietnamese pronunciation: [haj ɓa t͡ɕɯŋ], 𠄩婆徵, "Two Ladies [named] Trưng") or simply Hai Bà ("The Two Ladies"), c.14 – c. 43) were Lac Viet military leaders who ruled for three years after commanding a rebellion of Lac Viet tribes and other tribes in AD 40 against the first Chinese domination of Vietnam. They are regarded as national heroines of Vietnam. Their names were Trưng Trắc and Trưng Nhị. Trưng Trắc was the first female monarch in Vietnam, as well as the first queen in the history of Vietnam (Lý Chiêu Hoàng was the last woman to take the reign and is the only empress regnant), and she was accorded the title Queen Trưng in the Đại Việt sử ký toàn thư.

The sisters were born in Jiaozhi (Giao Chỉ), a commandery of the Chinese Han dynasty in modern-day northern Vietnam. The dates of their births are unknown, but Trưng Trắc was older than Trưng Nhị. The exact dates of their deaths are also unknown but both died around 43 AD after battling against the punitive expedition force led by Eastern Han general Ma Yuan.

The Trưng sisters' rebellion was an uprising in the Jiaozhi province of Han dynasty (today Northern Vietnam) between 40 CE and 43 CE. In 40 CE, the Lạc Việt leader Trưng Trắc and her sister Trưng Nhị rebelled against Chinese authorities. In 42 CE, Han China dispatched General Ma Yuan to lead an army to strike down the uprising. In 43 CE, the Han army fully suppressed the uprising and regained complete control. The Trưng sisters were captured and beheaded by the Han forces, although Vietnamese chronicles of the defeat record that the two sisters, having lost to Han forces, decided to commit suicide by jumping down the Hát Giang river, so as not to surrender to the Han.

The Zhuang languages (/ˈdʒwæŋ, ˈdʒwɒŋ/; autonym: Vahcuengh [βa˧ɕuːŋ˧], Sawndip: 話僮) are more than a dozen Tai languages spoken by the Zhuang people of Southern China in the province of Guangxi and adjacent parts of Yunnan and Guangdong. The Zhuang languages do not form a monophyletic linguistic unit, as northern and southern Zhuang languages are more closely related to other Tai languages than to each other. Northern Zhuang languages form a dialect continuum with Northern Tai varieties across the provincial border in Guizhou, which are designated as Bouyei, whereas Southern Zhuang languages form another dialect continuum with Central Tai varieties such as Nung, Tay and Caolan in Vietnam. Standard Zhuang is based on the Northern Zhuang dialect of Wuming.

The Tai languages are believed to have been originally spoken in what is now southern China, with speakers of the Southwestern Tai languages, which include Thai (modern-day Thailand), Lao (modern-day Laos) and Shan (modern-day Shan State, Myanmar) having emigrated south in the face of Chinese expansion. Noting that both the Zhuang and Thai peoples have the same exonym for the Vietnamese, kɛɛu, from the Chinese commandery of Jiaozhi in northern Vietnam, Jerold A. Edmondson posited that the split between Zhuang and the Southwestern Tai languages happened no earlier than the founding of Jiaozhi in 112 BC. He also argues that the departure of the Thai from southern China must predate the 5th century AD, when the Tai who remained in China began to take family names.