You can try the following methods:

Several snails with shells and meat were mashed into mud, embedded in the cracks of porcelain, and used normally after drying in the shade.

You can pour glutinous rice (or japonica rice) porridge soup on the stove and cook it with slow fire for about 1 hour, so that the starch in the water can penetrate into the cracks in the casserole. The boiling casserole should not be placed directly on the concrete floor from the fire, but on a wooden or iron tripod, otherwise it will crack due to uneven cooling.

Fill the joints with cement slurry. You can continue to make tea after 3 days of natural air drying.

100g milk, slowly add vinegar while stirring, then take half an egg white, add water and stir evenly, and then add a proper amount of quicklime powder to stir into a paste, which can be used to bond pottery fragments. For broken ceramic utensils, tie them tightly with a rope after bonding, dry them slightly, bake them slightly, and cool them until they are firm.

If the damaged area is large, it can also be scraped off or covered with gold.

Zisha Pot is a unique handmade clay handicraft in China. Its production began in Zhengde period of Ming Dynasty, and the raw material was purple mud, which was produced in Dingshu Town, Yixing, Jiangsu Province.

The teapot is bullish in the auction market and is an "antique" with collection value. The works of famous artists are often hard to find. As the saying goes, "There are many jewels in the world, and Yixing Zisha is the most sought after."

The raw material is purple sand, which is produced in Dingshu Town, Yixing, Jiangsu Province, also known as Yixing Zisha Pot. It is said that the founder of teapot is Gong Chun of Ming Dynasty in China. Due to the perfect combination of artistry and practicality, the teapot is so precious and memorable. The benefits of making tea in teapot and the culture of drinking tea blindly add to the noble and elegant charm of purple sand.

Baidu encyclopedia-teapot