It is impossible for you to get a visa for China in the embassy on the same afternoon, the Office Hours of visa office of embassy: 09:00-11:30, Monday-Friday (except holidays).

Second, the visa office of embassy is closed on 13rd May for the Thai holiday.

Thank you for the answere.
It is possible to get a tourist visa for China in BANGKOK on friday the 14th on the same day ?
If yes, in regulare case, there could be any problem to not get it on the same day ?
Last year I got a visa in Germany without any problems, but this year Frankfurt no gives a visa on the same day any more.

Thanks

Now, I'm not sure that the Chinese embassy in Bangkok still provide the same-day processing service, its official website is not updated in times. If the same-day processing service is still available, you can get a visa on Friday, 14th May on the same day.