Journey To The West: Won Laojun In The Opening Game

Su Xun came to the Spring and Autumn Period and became a prince of the Zhou Dynasty.
He only wanted to have fun, and he had profound attainments in music, chess, calligraphy and painting, and created many classics in advance. Unexpectedly, he became famous because of this and became a "gentleman" famous all over the world.
He thought that this life would pass happily, but unexpectedly one day, he discovered that the person with whom he had been chatting happily, both as a teacher and as a friend, turned out to be the founder of Taoism, Lao Tzu, who "Purple Qi Comes Thirty Thousand Miles from the East"!
This was nothing. Then, Su Xun discovered that this world turned out to be... the world of Journey to the West! !
Then I am not the "ancestor of the world" Taishang Laojun! ?
"Su Tong'er, are you here again today? As long as you win my game of chess, I will accept you as my disciple, how about it?" I said with a smile.
Thus, Su Xun became the only true successor of Taishang Laojun, and the first thing he had to do was... to go west out of Hangu with Laozi and turn the tiger into a Buddha!
PS: It only involves Journey to the West and orthodox mythology, and does not involve the content of prehistoric times and gods.