Siddartha Gautama Buddha is a Nepali, why he was more been popular in China and Japan?

Answer 1

The traditional religion of China was Taoism and it wasn't exactly like it was peaceful. It had very strong roots in hierarchies and that did NOT speak to the people. It was too much for the common people, who have no public educational system and therefore would not understand the strict rules Taoism had. However, Buddhism was a much more people-friendly religion. People, under the help of monks, could understand the scriptures and feel for once. Of course, since Taoism had such strong roots, over time in China Taoism and Buddhism are "combined" or at least coerced. It was about the Tang dynasty, I believe, that Chinese Buddhist monks spread to Japan. And back then Japan was not as nearly as powerful as China and so they had to take in this religion. Of course, their native religion, Shinto mixes with Chinese Buddhism and then you get to the people rinse and repeat.

When a religion speaks DIRECTLY TO the people, the followers, it will be a success. Look at Christianity, Christ is only an ASSUMED figure that existed, he only exists in the bible. There are no other historical documents that prove he had existed. We at least know the supposed father to Siddartha Gautama really existed, and therefore a bloodline CAN be traced. Unlike, hey, he's just a regular old carpenter and his wife gets knocked up by God. And there are Gautama's followers that can be traced.

Answer 2

Gautama Buddha came from a kingdom in Northern India just below the Himalayan foothills. He was not from Nepal .
He travelled with his following of monks or deciples spreading his teachings in India during his lifetime, but these teachings were spread across the East, Asia, up into China and over to Japan for 500 years or more after his death, by monks who travelled along the various trade routes into these regions spreading his message and teachings.
At that time this was an incredibly civilizing influence in these areas that were pretty barbaric before the message of Gautama Buddha reached them.
I do not know if Buddhist philosophy is more popular in China
and Japan in present time that in other Eastern countries.
You must be basing this on some information I do not know about.