What are the unexpected turning points of the TV series "Mahjong Antique Intimate Contact Collection"?

The book of mahjong antiques intimate contact is a drama of the Republic of China, which tells a story about antiques. According to the reviews of Douban Film, the play has many unexpected turning points, including:

-Ma Boyong (Qu) performed unexpectedly in the play;

-The emotional line between Ma Boyong and Li Mengyang (Li Jiuxiao) is unexpected;

-Ma Boyong and Li Mengyang's emotional line is unexpected;

The emotional connection between Ma Boyong and Li Mengyang is unexpected.