The price of 5000 yuan/square foot refers to Huang Lao's early paintings, such as landscape painting, Chinese painting, calligraphy and so on. This is the price of early works. I met a man named Cheng in Hainan who collected his early works. This should be Huang Lao's early works. The name is "There are so many beauties in Jiangshan"
Huang Lao's later works are worthless. After all, he is old and ill, so it is understandable that his works may not meet his own requirements. The price of his later works is about 50-500/ sq. ft., which is priced according to the age.