How do you think Buddhism spread throughout China during the Tang Dynasty?

Buddhism spread to China during the Tang dynasty. As the Sui and Tang dynasties expanded China, they seized new lands to the west. Many of the people living there were Buddhists, and they spread their religion as they traveled throughout China. As interest in Buddhism grew, especially among the Tang rulers, many of whom were Buddhists, Chinese travelers went to India to bring back holy Buddhist writings and translate them into  Chinese. When Buddhist writings became more available to people in China, the religion spread.

Hope this helps.

probably 3 since archeologists and historians don’t understand there writing.

well 1 they have there leader that controls them