What is the plot and ending of the Japanese version of Meteor Garden movie?

In the second film, in order to save Xiao Jin, Doumyouji Tsukasa was hit in the brain and suffered from memory disorder. He just forgot about Shanshan, but later his memory came back.

In the Japanese version of Meteor Garden, Doumyouji Tsukasa and Sugiyama were engaged from the beginning. However, the crown of their engagement token "Venus Smile" was stolen, and Doumyouji Tsukasa was afraid of angering his mother. Later, they found that the crown was fake, and there was no "Venus smile" in the world. This song was played by Sugiyama's parents, Feng (her mother) and other members to test her feelings for her.