Polygonum (Polygonum) ① Li ? o A general term for some plants in Polygonaceae [knot-weed]. Annual or perennial herb with swollen nodes. Stipules sheath-shaped, holding stems. Flowers are small, white or reddish, spikes or heads. Growing near the water or in water. The leaves are pungent and can be used for seasoning. It is produced all over China. The most common ones are Polygonum hydropiper, Polygonum hydropiper and Polygonum orientale.

2 metaphor is hard. "Poetry, Zhou Song and Xiao Ya": "Give and gather in Liao."

③ Li m ? o Spring and Autumn Ancient Country Name [Liao state]. One is "Yan".

1. In the southwest of tanghe county, Henan Province. My family name is the ancient country.

Today, there is a city hill in the northeast of Gushi County, Henan Province, that is, the land of ancient Guo. Ji surname, according to legend, after Tingjian. It was destroyed by Chu in 622 BC.

④ Li m: o Ancient county name [Liao county]. The southern dynasties were placed in beams. In today's Gushi County, Henan Province.