Xuan's explanation:
1. From death, announce the sound. Original meaning: day lily. An herb that is said to make people forget their troubles.
2. The original meaning is the same [brown day lily]. Such as Su Xuan (a girl without sorrow); Hemerocallis forget your worries (it is said that eating Hemerocallis can make people forget their worries)
3. In ancient times, the mother room was called the propaganda hall, and later it was called the [mother room] because it was declared as the mother or mother residence.
There is a mystery in Beitang. Why forget your worries? -A Dream of Red Mansions
4. Another example: Chen Xuan (mother's birthday); Xuanqin (another name for mother); Hemerocallis (mother)