For political, cultural, economic or other reasons, it is rare to find foreign or Khmer’s scholarship documents referring to the massive settlement of Chinese communities on Khmer’s territory during the Khmer Empire. The lack of documents is a reason, but in terms of evidence, there is no shortage. On the walls of Angkor, the scenes of army procession showing Chinese troops marching along with different foreign legion and Khmer. The same scenes repeat along the Bayon’s wall carving to which we can observe the Chinese army marching in procession along with the Khmer army and other multi-ethnic legions. Theses impressive carving do not limit only to military procession but there are a lot of daily life scenes showing Chinese cookers, merchants, workers and other ordinary Chinese people playing and living along with Khmer. These indicate that during the Angkorian period, the Chinese played an important role in the Khmer’s Empire.

In an inscription left by King Suryavarman I, mentioned the anger of Suryavarman I toward a nobleman named Tang. The inscription seems to indicate that King Suryavarman I was angry with Tang’s family because Tang has broken his vow of allegiance to King Suryavarman I who has offered Tang’s family his hospitality, land, wealth as well other privilege. But apparently, Tang has betrayed Him. He cursed the Tang family to perish in hell for eternity as the vow they made to Suryavarman I.

Official Thai historical documents, which are generally almost completely distorted and falsified by Thailand, do not mention the Chinese presence in Ayutthaya during the Angkorian period, but in a rare document about the history of an ancient Khmer’s pagoda (Vat Phanam/Phnom Cheung) situated in Khmer’s ancient city Ayutthaya, recorded about the history of a Chinese temple built inside the pagoda Phanam/Phnom Cheung to commemorate a Chinese princess(Soi Dok Mak) who fell in love with a Khmer king (1). The princess waited for the king but he did not come to her as promised. Later, the Chinese princess died, and the emperor understood her devotion and trustfulness so he built a Chinese temple for her to remind her temple in her native land, China. The document also states that during the end of the 13th century, there were more than 200 Chinese communities living along Chao Praya liver and in Ayutthaya, an important Khmer’s ancient city.

It's important to remind that, not only Chinese who come to settle on Khmer’s territory due to wars or other reasons but apparently, there’re also many other ethnics who come to install in Khmer’s Empire, these included the ancient Japanese manchus as shown on the wall of Bayon and Angkor. There’re a lot of fantasy and hypothesis related to a group of legion carving on the wall of Angkor during military parade to which mentioned Samkuk. Physically, that group of men resembled to Chinese men but not exactly like ordinary Chinese. Modern thai people claimed to be their kind or their ancestors but it seems that they are not. Some scholars like G.Coedes and his colleges from EFEO referred that group men Samkuk as black skin people while other attempt to refer them as Kasi people, a group of Khmer or Khmer-mon. Some other may refer them to the groups autochthone austro-malayo-indonesian who actually living in Indonesia and malayo golf like Dayak hari Gawai, Dayak merah, dayak-merah-jilah, dayak-merah-suku, Iban-sarawak, Jahut, Mah meri, murut, Orang Asli, Pasukan-merah-kawal  ethnicrungus-kota-belud ect – But physically, the people considered as Austro-malayo-indonesia did not resemble to the Samkuk men on the wall of Angkor but rather like ancient Khmer who had populated the whole SEA to Malayo-indonesia and  since pre-history

At time, while digging deep down inside the Thailand untold history, it appeared so clearly that Japanese manchus played a major role in the foundation, expansion and protection of thailand since the primitive foundation Siamese kingdom to now. It seems that it was these Japanese manchus, agile and well mastered of hybrid military art along with the Chinese Song Dynasty, installed in Cambodia for decades, had revolted against Khmer and detached two Khmer’s cities, Ayuthaya and Lavo to form primitive siam kingdom at mid-14th in collaboration with Ming dynasty who just imported a crushing victory over the Mongols at that period.

Indeed, China is the main profiteer of the collapse of The Khmer and the Mongols’ Empire in confront direct and indirect since Mongol control the region and the world. It’s important to emphasize that, since its foundation, siam kingdom functioned as a simple vasal state to China. It’s means, the ancient Siamese king couldn’t rule siam kingdom without accord from Chinese emperor. To mark that pact, Chinese emperor sent to Siamese king a lotus seal to which mentioned Siam king in Chinese. While manchus qing invaded China and founded qing dynasty from late 17th, Siam kingdom become more closer alliance to qing. Together, they get rid of Laos and Burmese backed by Ming, chased them out of siam kingdom. Enforce in their crushing victory over Burman, Laos, Indonesia, qing and siam led another war against Khmer to reach the Chinese Macu who took refuse in Cochinchina. They had almost killed Khmer from Cambodia, Thailand, Laos and KKK. It’s the most horrible period for Khmer since the decline of Khmer’s Empire, in enfolded between tai qing and dai viet ming mang, Khmers were almost killed at late 18th to early 19th.

While qing annexed more Khmer, Burma and Laos’s territory to Thailand, qing managed Thailand as its simple province. Qing emperor sent a new qing lotus seal to replace the ancient one on which mention siam king in Chinese. This new qing seal was use from rama1 to rama4 who has  profited the decline of qing to replace Chinese seal by that of Khmer on which mention Khmer’s royal word “ Prah borom reach oka” in Khmer’s script. Rama4 led a hug cultural reformed from Chinese to Khmer. This cultural reformed was followed by his successors rama5 and rama6. It’s rama6 who had make Khmer’s version of Ramayana or Khol or khon in thai’s dialect, as part of thai’s identity which is now become a hug cultural conflict with Khmer as Ramayana or Khol in Khmer’s version and art was part of Khmer unique identity since pre-angkor period to now. The rama4 seal was used by his sucessors until 1940, date to which Thailand used a new seal with thai modern script instead of Khmer but keep the same initial design.

On a Thai-Japanese sword museum dedicated to thai-japansese diplomacy and the military cooperation over the last 600 years, we can remark some horrible demonic Japanese warriors in their frightening horrible uniform and mask. 600 years seems to coincidence with the foundation of siam kingdom at mid14th. Weren’t those horrible warriors who along with Chinese song who led revolt against Khmer and detached two Khmer’s provinces to form primitive siam kingdom.

In a Thai historical painting depicting the Narai army during the bloody war in Longvek, we see the presence of Japanese warrior in samurai uniform with long and short sword along with Thai’s troops appeared to be Chinese. This confirms that Japanese warriors and Chinese army were from different Chinese dynasty presented in the thai war with other nations in particularly with Khmer. It is to mention, during 2nd world war, Thailand was used as military bas for Japanese empire to attack other nations in SEA as well against westerners.

Chinese did marked their present in Khmer and thai's history but with Khmer, chinese were servants of Khmer's Emperors while thai's kings were slaves of chinese instead.