The cheap square in the article that charges less than two yuan means the famous old restaurant in Beijing. Cheap Square, a famous Chinese time-honored restaurant in Beijing, was founded in the 14th year of Yongle in Ming Dynasty (A.D. 14 16) and has a history of 605 years (up to 202 1 year). In 200 1 year, it passed the ISO900 1 international quality system certification, and now it is a national super restaurant.