In the Nanhui area on the coast of Pudong in the suburbs of Shanghai, the folk custom of singing wedding songs and mourning songs has been passed down for hundreds of years. The Qingongtang built 270 years ago divides Nanhui into two natural areas, east and west. Wedding songs and mourning songs are mainly spread in the eastern half of the seaside Shuyuan, Wanxiang, Laogang, Zhuqiao and Datuan. This group of land was formed later, but it retains very ancient wedding and funeral ritual songs. Wedding songs and mourning songs are a kind of ritual song that has been passed down for thousands of years in our country. As early as the Spring and Autumn Period 2,500 years ago, "Mencius" said: "The wife of Qiliang of Huazhou was good at crying for her husband and changed the national customs", which shows that there were "mourning songs" in the Qi State period. The origin of wedding songs is even earlier. Most academics believe that it was caused by the predatory marriage in ancient times. Later, with the marriage of sale under the patriarchal system, the wedding songs developed and passed down. In the collection of folk songs compiled by Ming Dynasty writer Feng Menglong, there is a short folk song called "Marry". The first sentence is "Marrying a daughter cries and a son cries". The custom of crying for marriage was sung in the ballad, indicating that this custom was very popular in the Wu dialect area at that time. At the end of the Qing Dynasty, the long narrative song "Baiyang Village Folk Song" circulated in Pudong, Shanghai, contained a lot of content about "crying for marriage", which shows that the custom of crying for marriage was popular in Shanghai in the late Qing Dynasty. In Nanhui, there are extremely rich original mourning songs and mourning songs. From the mid-18th century to the late 1980s, in Nanhui, almost every village had a group of masters who could compose and sing "crying songs", and even some men could sing mourning and crying songs. This is extremely rare in the country. Crying songs are sung while crying, and the rhythm is relatively slow, which is suitable for women on the seaside to sing while working. In the old society, people along the coast of Nanhui often encountered natural disasters such as typhoons and tides, and their lives were extremely difficult. Therefore, they often use crying songs to vent and lament their miserable fate. In the past, coastal areas were relatively remote and transportation was relatively blocked, which happened to be an important environment for the complete preservation of crying songs. In formal occasions, crying songs must be sung along with wedding ceremonies. On the eve of the bride's wedding, the brother and sister-in-law put clothes, quilts and cloth (dowry) into the box, commonly known as "filling the box". At this time, the bride and her mother sing the song "filling the box" in duet. On the wedding day, the elders who sent gifts, the bride must sing to thank them. When the wedding sedan is carried to the corner, the sister-in-law brings the bride a bowl of rice, and the bride sings "Shang Jiao Fan" to thank the brother and sister-in-law. Then the bride puts on embroidered shoes, and the brother carries her into the sedan, and the bride sings "Holding Jiao". Crying songs are songs that married women used to cry to their teenage years. In the customs, she is allowed to speak freely. This kind of song is vented freely when the girl's emotions are unobstructed, and the emotions are unrestrained and passionate. The lyrics are full of metaphors, parallelism, back and forth, strange and magnificent. The words must be extreme before they are happy, and the emotions must be exhausted before they stop. The mourning songs are divided into three parts: scattered crying, head covering and sutra. The sutra is sung in conjunction with the funeral ceremony, including "Combing Hair Sutra", "Dressing Sutra", "Making Materials Sutra", "Covering Sutra", etc. Scattered crying is the song sung by relatives to mourn him after his death. The closer the relationship, the more sincere the feelings. For example, crying for husbands, wives, parents, and children, the pain is deep, the feelings are also sad, the weeping is desperate, and cannot stop. Weeping for the various benefits of the deceased in his life and the suffering of having no relatives in the future. This kind of crying often evokes the ups and downs and misery of one's life, so it is unstoppable. The language of scattered crying is magnificent and colorful, imaginative, metaphorical, and artistic. The crying song comes from the oral language of the local people, with vivid images and high literary value. In addition, Nanhui Crying Songs have been sung in the local area for hundreds of years, and they are also precious materials for studying local folk customs. In the 1980s, most of the elderly women in the coastal areas of Nanhui could sing Crying Songs, and dozens of excellent singers such as Pan Cailian, Zhang Wenxian, Su Yankui, Shen Xiaomei (Wang Xuehong's master), and Wang Xuehong were discovered. In this area, more than 8,000 lines of Crying Songs for Weddings and more than 20,000 lines of Crying Songs for Funerals were collected. In 1983, "Crying Songs for Funerals" won the second prize of the National Excellent Folk Literature Works from 1979 to 1982 (the highest award in the Han area), which attracted the attention and attention of folk literature experts and scholars at home and abroad. Some experts said that Nanhui Crying Songs are the most complete and richest in the Han area. In 1988, "Crying Songs for Funerals" (8,000 lines) was published by Shanghai Literature and Art Publishing House; in 1989, "Wedding and Funeral Ritual Songs" (Pan Cailian's Crying Songs Collection) was published by China Folk Literature Publishing House. Crying songs with more than 100,000 words were selected by "Chinese Folk Songs Collection Shanghai Volume". In the recent survey of intangible cultural heritage, it was found that the custom of crying at weddings gradually died out in the 1960s, but the custom of crying at funerals is still preserved in coastal areas, and some new singers have been discovered. Unfortunately, excellent singers such as Pan Cailian and Shen Xiaomei have passed away one after another, and the younger singers such as Zhang Wenxian and Wang Xuehong are now in their 70s and 80s, and their memory has greatly declined. The protection and inheritance of Nanhui crying songs is imminent.