You may need a visa to enter China, please contact your local Chinese Embassy or Visa agency to apply for one.

It's a convenient way for travelers to enter China without a visa, as long as you have tickets abound for a third country or region (Hongkong and Macau included) and meet other simple requirements. You can call Shenzhen customs at +86 0755 12367 for official help or refer to https://visitchinavisa.com/chinas-240-hour-visa-free-transit-policy-the-ultimate-guide-updated-2025/ for detailed information.