1. Use a vacuum syringe to pump out the air in the glass gap, and then fill it with glass mending agent.

2. Use ultraviolet light to irradiate the upper, lower, left and right sides for two minutes, so that the repair solution can solidify.

3. Drop a drop of high-concentration mending agent and cover it with a glass sheet.

4. After ultraviolet drying, scrape the surface with a blade, coat it with a polishing agent and polish it with a cloth.