Do I need samples to apply for a patent? Just creativity and design?

Absolutely. Patents protect technical solutions, knowledge and abstract products, not specific items; As long as there is an achievable technical scheme, you can apply for a patent. Physical objects and samples are not necessarily needed. The patent system in China follows the principle of first application, and the patent right of the same invention is granted to the person who applies first. If it is robbed, there is no good measure, unless you have evidence to prove that you invented it first, and then sue him for infringing the patent application right. Therefore, patent applications should have a sense of time and confidentiality.