Excuse me, what font is this?

This font is used for inkjet printing, and its professional name is "Lian Jin Word", also called "Missing Word". Usually in the engraving machine software, edit with any font (such as Lian Jin) (such as Wen Tai). For example, the pictures you provide are edited in big black or bold. There are generally no free downloaded link fonts on the Internet, so you usually need to edit them yourself.

However, there is a software on the Internet called "Creating Lian Jin Font Library", which needs to be purchased, but you can try it three times for free. After installation, you can play this effect directly.