Is Shaolin Yijin pulp washing stick and Du Xinghua magnetic therapy stick the same thing?

They are two different things. The one in Shaolin is a fake, hyping the concept of washing marrow by Yijinjing in Shaolin Temple. A group of people pretended to be monks, imitated Du Xinghua's appearance and copied Du Xinghua's patent number.

Du Xinghua is an independent brand founded nearly ten years ago. The inventor is Du Xinghua himself. Du Xinghua is a famous doctor who has been engaged in TCM research for many years. Various media reported his contribution. They have opened an official online shop in Taobao. This is also available on Baidu.