I Was Shocked at the Beginning, I Am Actually a Descendant of Yanzi Li San?

The title of the book above is to attract attention. It is officially called "Swallow Gate: The Old Gilt Seal". Li Zhongyan runs the replica old teahouse left by his second uncle. It is facing bankruptcy due to poor management. The day before he is about to leave, someone suddenly appears in the teahouse with an old gilt seal and claims that it was entrusted by his second uncle who has been missing for eight years...