A series of shorts which aired along with the release of Blue Lock: Episode Nagi. A different short was shown each week during the film's theatrical run and they were all included with the BD release.

After Jiang Beiran came to Xuanlong Continent, he experienced the ups and downs of human relationships, and gradually figured out the rules of survival in this world, and was later accepted as a disciple of Guixin Sect. In the sect, he appears to be a low-key disciple who loves Go, but in fact he is proficient in chess, calligraphy, and painting, and is capable of literary and martial arts. He secretly helped the sect discover and train a group of outstanding disciples, and started the path of cultivating immortality in a low-key way... (Source: Tencent, Google translated)

Hideyuki Toyotomi used to be a normal person, but gets dragged into mahjong games by his three degenerate companions and constantly loses in spite of the tiles he draws. (Source: Giant Bomb)

Fifth season of Hua Jianghu: Bu Liang Ren.