Chinese Painting Password in the Middle of the Antique Bureau

The film tells that the owner of a small antique shop, Wishing Book, is living a normal life but accidentally gets involved in an incident about the national treasure "Along the River During Qingming Festival" and learns that he has a close relationship with this incident. In the investigation against the villain against time, Wishing uncovered layers of clues to find key evidence and finally successfully guarded the story of the national treasure.
(Source: Chinese = Douban || Translation = MDL)