During ancient history, why China usually has bit less or almost none interactions with other major civilizations during the same time?

Most of the interaction flowed East to West,due to the inventiveness of the Chinese people and their advanced civilization. Japanese and Korean culture were heavily influenced by Confucianism. India gave Buddhism to China, and in what used to be known as Indo-China, the two civilizations adjusted to each other. China beat off Arab invaders about the year 1,000, but the Silk Road began in antiquity and thrived until the modern era.

It "seems" that way because you are utterly ignorant of Chinese history. For fcuk's sake, go to the library and read a book about the history of China.

China had thriving trade contacts with the steppe tribes (from whom they bought horses and to whom they sold silk) and the Sogdians, a long lasting Central Asian civilisation who were China's contacts at the eastern end of the Silk Road.

Also, until shut down in about 1530, China had a thriving maritime trade extending as far as Calicut in India and, possibly, the East Coast of Africa, and the Philippines and Indonesia.

they were farther away, and hostile to outsiders, they saw themselves as the center of the universe and civilization, with everything on earth getting less civilized the farther you went from china. they had knowlidge of and some contact with nearby india, but the himilayans to the west and southeast asian jungle to the east hindered larger scale relations. the chinese had some knowlidge of and minimal relations with ancient rome. they called it "da qin", meaning "great empire"' pretty high praise considering the chinese theory of civilization mentioned earlier. the main thing is, very few europeans/near easterners got through all of persia to india, which was generally on the very far edge of the known world. to get through all of india and find china was almost impossible. not enough was known about anything north of the alps or say, bulgaria to go through northern europe and russia, so through turkey, babylon, persia, india would have been the only way to go.

i hope this helps!