Can I go directly when the entry and exit reservation is full?

You can go directly to the scene to deal with it.

According to the query of Peking University Magic Weapon, Article 10 of the Law on Exit and Entry Administration of People's Republic of China (PRC) stipulates that citizens of China who travel between the mainland and the Hong Kong Special Administrative Region and the Macao Special Administrative Region, and citizens of China who travel between the mainland and Taiwan Province Province shall apply for a pass according to law and abide by the relevant provisions of this law. Measures for the administration shall be formulated by the State Council. If the contract expires, you can go directly to the site.