The funny part is that they give you something like 31 names and tell you to pick 30 of them that you want to be elected (so one person gets left out). Early in his career, Xi Jinping actually lost his only direct election this way (they ignored the results and gave him the post anyways). Even at the lowest level, there are definitely never any one on one elections where two people can campaign for the same office, the system doesn't allow for that.