Chinese locks are not really puzzles, but many puzzle collectors have them because of the unusual opening procedures.
The lock in the top photograph contains three "tweezer like" parts that must be squeezed together by the key before they will fit through the slot in the end.
The dog lock is a combination lock that opens when the three wheels are lined up to read "I don't want the gold". But lined up where? It's not that easy.
Both locks were obtained in the village of Yangshou, China. They are made to look old and sold as such, but they are actually quite new. They were placed into a lapidary tumbler with steel shot and water to clean and polish them to their current condition.