2. Cut several knives vertically and horizontally with a fruit knife to form a small square like a building block.

3. Then put it upside down and cover it in the basin. When covering it, you can gently tap it on the four corners of the box with a knife, and the tofu will fall into the basin smoothly.

4. Cut the changed egg into small pieces and spread it on the tofu. If there are no preserved eggs at home, you can use preserved eggs instead, because the preserved eggs are crystal clear, the color is good and more attractive.

5. Then cut the mustard tuber into small pieces and spread a layer on the preserved eggs. The mustard tuber is a little spicy at the end, which can stimulate the taste buds and make the taste richer.

6. Cut the laver into small pieces and sprinkle it on it. If there is coriander, you can add some coriander or shallots to make it fragrant.

7. Pour the prepared soy sauce, rice vinegar and sesame oil, and you're done.