What is the relationship between Yu Chunjin and Lao Fengxiang?

It should be Yuchunjin Company that settled in Laofengxiang Store and cooperated with it. Selling gold with a purity of five nines is much higher.

Yuchunjin belongs to Wen Yuchun Culture Development Co., Ltd. and is a franchise company of "Wujiujin" professional brand Yuchunjin. 99999 is 59 gold.