Tell me about the place names, classical Chinese, local customs and customs of Beijing that you know from the book Old Stories in the South of the City.

1. Hutong, when you hear these two words, it always gives people a deep, tortuous and winding feeling. The alley is small, exquisite but intriguing, and the design is also very humanized. Walking in the alley, although the narrow alley is not as bright as the street, the ground is not very flat, and even people will eat a shoe on the upper when walking in the alley, but the quiet and tortuous alley is also very popular with people.

2. Siheyuan. Among the houses in the east, west, south and north directions of quadrangles, the north room is the upper room, also called the "main room", which is used by the people with the highest seniority in the family, mostly for the elderly such as parents; The rooms on the east and west sides are wing rooms, mostly for sons, and the choice of wing rooms is also very regular. According to the custom of traditional patriarchal clan system in China, the eldest son is the oldest and the east is the most respected (or the left is the most respected). So the eldest son lives in the east wing and the second son lives in the west wing; Houses in the south are called "upside down" and are usually occupied by servants. The suppression of women's status in the feudal old society is also obvious in quadrangles. For example, ladies and daughters generally live in the backyard of quadrangles, isolated from the outside world. During the Spring Festival, residents in old Beijing used to put up portraits of "Qin" and "Weichi Gong" on two doors as door gods. This custom also originated from historical legends.