I put on a pair of film gloves and carefully picked up the wooden box and looked at it carefully. This mahogany box had no tricks, no hidden symbols that were difficult to figure out, and it was not even locked. I wiped it clean and opened it to see. There was a river painted on the cover of the diary inside, with branches of the crown of the tree extending on both sides of the river. These things are not trees but look like trees. They have a collective name called "tide trees".
