My grandfather left me a message before he died: Our family has been guarding an invisible door for generations. There is a river behind the door. Things on the other side of the river must not be allowed to touch the threshold.
Main characters:
Chen Shu (me): 25 years old, owner of a county coffin shop. I have been able to see things I shouldn't have seen since I was a child, but I have always pretended not to see them. Timid, talkative, and prone to nagging when things go wrong, but when things really get into trouble, he is terrifyingly calm.
Grandpa: The old shopkeeper of the coffin shop has kept secrets all his life. Before leaving, he drew a picture on the palm of my hand with his fingernail. Before the picture is finished, the people will disappear.
Lao Chen: Grandpa's old friend, he claims to be an antique collector, but in fact he always talks about cheating. There are only three fingers on his left hand, but it is said that he has touched more artifacts than the pores on a living person.
Professor Zhou: A female archaeologist from the provincial capital looks like a star on the calendar in the 1990s, but she is more wild than men when going to graves. There are always three things in the bag: an engineering shovel, glutinous rice, and a copy of "The Classic of Mountains and Seas" that was half burned by fire.
