Bite Splint in Beijing

Hi! I'll be traveling through several destinations and I'll be staying in Beijing starting on July 22.

I'm currently experiencing a pretty severe episode of bruxism, and I'm worried about my teeth during the trip. I was wondering if anyone knows of a place in Beijing where I could get a night guard (bite splint) made without it being too expensive. In September I'll be getting a crown on one of my molars, so I won't be able to keep using the same splint afterward, meaning I'd only need it for the month of August. That's why I'm hoping it won't be too expensive.

If anyone has information about how long it usually takes to make one (so I can figure out whether I'd be able to pick it up during my stay in the city) and roughly how much it costs, I'd really appreciate it.

Thank you very much!