Mother-of-pearl is a Chinese herbal medicine, which is produced in China, Jiangsu, Zhejiang and Hubei provinces. It co
1, seedling raising: sow seeds after drying, soaking and accelerating germination, and sow 150-200 seeds per square meter of seedbed, at the same time, d
The seventh day of the seventh lunar month is Valentine's Day, and the cowherd will know how to weave a gir