Why is there nothing about Laos and Cambodia in Chinese history?

China-Laos relations

The exchanges between China and Laos began during the Three Kingdoms period. At that time, the area of ??Laos near Yunnan was called "Tangming"; In 227 AD), Tang Ming sent envoys to pay tribute to Soochow. During the reign of Emperor Gaozong of the Tang Dynasty, Zhenla was divided into northern and southern countries. The northern part was called Wendan Kingdom, and the capital was built in Wendan City (today's Vientiane). Wendan Kingdom had close and friendly relations with the Tang Dynasty, and had sent envoys to the Tang Dynasty four times. .

Historically, the trade between the border people of China and Laos was very active. Chinese merchants would go to Laos to engage in trade, and the Lao border people would also go to China. Chinese people immigrated to Laos during the Ming Dynasty, and during the Qing Dynasty During the Yongzheng period, Nanzhang (Laos) was naturalized to China and became a vassal state of China. However, Nanzhang became a French protectorate in 1893, ending its relationship with China[8]. From the 18th to the 19th century, overseas Chinese trade had considerable influence on the Laos economy. Overseas Chinese and Laotians live side by side, which has introduced a lot of Chinese culture to Laos. For example, the pronunciation of many Laotian words is similar to Chinese.

China-Cambodia Relations

Cambodia is located in the Indochina Peninsula and was called Funan in ancient times. It is the earliest Indianized country in Southeast Asia and has maintained good relations with various Chinese dynasties in the past. He sent an envoy to the Liang Dynasty of China and paid tribute and called him a vassal. Emperor Xiao Yan of Liang Dynasty granted him the title of King of Funan, named him Chen Qiaoru, and gave him court uniforms. From then on, the relationship between China and Cambodia became increasingly strengthened, and many Chinese immigrated to Cambodia several times. The oldest and first record of Cambodia in China was during the Western Han Dynasty (100 BC to 100 AD); the most detailed and important records were compiled by Kang Tai and Zhu Ying during the Wu Kingdom (220–280 AD) in the book. In addition, such as the Liang Dynasty (AD 502-556 AD) historical book "Liang Shu", the Sui Dynasty historical book "Sui Shu" and the Tang Dynasty historical book "New Tang Shu", a brief history of the Taiping Emperor's period " Some of the Chinese historical materials in "Taiping Yulan", "Taiping Huanyu Ji" and "Tongdian" record the historical biography of Cambodia's Funan, Chenla and Angkor dynasties and the close and friendly relations between China and Cambodia.