Regarding the visa issue, the Thai government stipulates the following.
1 You can apply for a continuous visa to Thailand.
You can stay in Thailand for 2 months, but you need to apply for a tourist visa in China first. The tourist sign can book the air ticket to Thailand directly in China, and the return air ticket can be purchased at the time decided by Thailand.
China passport can go directly to landing visa window of Thailand airport to handle landing visa and landing visa for one-time stay of 15 days, but round-trip flight information is required.