Zi Collection, Upper Volume, Page 12, Entry 02 Pronounced reng. A type of tree. Zi Collection, Upper Volume, Page 12, Entry 03 Pronounced ren. To get into a carriage. In "Leipian" (Leipian), it refers to a wooden block used to stop a carriage wheel from rolling. Zi Collection, Upper Volume, Page 12, Entry 04 Pronounced er. Also a type of tree.