Where do you see the features of the historical development of India, China, Japan in the Middle Ages?

Where do you see the features of the historical development of India, China, Japan in the Middle Ages? Identify the common features of these civilizations.

Common features:

Weak influence of Christianity, local Asian religions: Buddhism, Hinduism, Shintoism.
Feudalism similar to European was only in Japan.
There were no universities, no parliament.
The device was usually imperial. In India, this is the Sultanate of Lodi and the empire of Babur (from the 16th century), in China – the Tang, Song, Yuan, Ming empires, in Japan – from the end of the 12th century, the shogunate under the weak power of the emperor.
The economy was different from the European one. They grew rice, made porcelain, silk, paper. There was a course of isolation in trade. Japan had almost no contact with the outside world, the Chinese did not make any sea expeditions after the 1430s (in this they differed from the Portuguese and Spaniards of the 15th century), the Indian states were limited only to trade within the Indian Ocean.
There were no centers of religious authority such as the Pope or the Patriarch.