His son!
Chen Nan felt a shock in his heart, no wonder the old man looked so similar to the person in the painting; it turned out they were father and son.
"Grandfather, then do you know where he is now?" Chen Nan asked.
"I was about to ask you! Your friend who painted this picture, does he know him?" Lan Qingfeng looked at Chen Nan full of expectation.
"My friend only saw him once, so I wouldn't say he knows him." Chen Nan, somewhat disappointed, looked at the old man and asked, "He is your son, how could you also not know where he is?"
Upon hearing Chen Nan's words, the old man sat back down in his chair, somewhat dejected.