Visa denied

1. Delaying your return to China means that you are still staying in Thailand when your visa in Thailand has expired;

2. Generally, if there are many delays, you will be suspected of immigration tendency or other bad aspects, and there is a risk of refusing the visa.

3. You can see if the situation is true. If it is true, you can prepare the materials and explain it when you reapply. If it is not true, it may only be that there is something wrong with the travel agency's application, and you can continue to apply for this thing.

It shouldn't be too complicated; I hope I can help you. Please ask if you have any questions.