Who is Leng Zixing in a Dream of Red Mansions?

Leng Zixing, a character in A Dream of Red Mansions, appeared in the second episode of "Mrs. Jia died in Yangzhou City and Leng Zixing gave a speech in the mansion".

He is Zhou Rui's son-in-law, an antique dealer in the capital, and a good friend of Jia Yucun (the original version of A Dream of Red Mansions: this man is from Leng Zixing who deals in an antique shop in Du Zhong, and we met in Du Zhong in the past).

He had nothing to do with Lin Daiyu, but he played an important role in A Dream of Red Mansions: he introduced the mansion to him, making the Jia family as a whole appear in his mouth, which was regarded as the vision of the mansion. The next time Lin Daiyu entered Jiafu, he provided readers with an opportunity to observe Guo Rongfu closely through Lin Daiyu's eyes.