Can steamed buns with old hair be frozen in the refrigerator?

Because the old steamed stuffed bun contains yeast, yeast cells generally cannot grow at a temperature lower than the freezing point of water or higher than 47℃, and the optimum growth temperature is generally 20℃~30℃. If the yeast doesn't grow in the refrigerator, the steamed stuffed bun won't go bad and can be eaten again when taken out.

Things like yogurt and fungi should be kept at low temperature, otherwise they will go bad.