Money turtle is a kind of closed turtle, that is, when its head and limbs are all in the shell, its shell can be completely closed, so that you can hardly find a crack. This is the end. Beetles, on the other hand, can shrink their heads and limbs to the shell, but there are still four holes in the shell, and external forces can completely pull their heads out or cause damage to them.
Look at the third line. The so-called "three lines" not only refer to the three ridges protruding from the turtle body, but almost all turtles have these three ridges, so it is impossible to distinguish the money turtle from the money turtle. But when there are three obvious black vertical stripes in the shape of "Chuan" on the three protruding ridges at the same time, this is the third line. This is a unique feature of the scarab. With the third line, it will never be confused with other turtles.