"Yi Yin's hometown, the Book of Songs is in harmony with Yang" means that the birthplace of Yi Yin, a great statesman in Shang Dynasty and the ancestor of Chinese cooking, is in harmony with Yang described in the Book of Songs. According to historical research, it is now Yinzhuang, Bailiang Town, Heyang County.

Meng Ziyan said that Yi Yin "cultivates the land of novelty". Where is the land of novelty here? There are Heyang theory, Chen Liu theory, Cao County theory, Yichuan theory and so on in history. Among them, in ancient times, there was a state of Xin in Heyang, and Yi Yin's birthplace and hometown played an important role in many sayings. No matter from the records of local chronicles, historical sites and folklore analysis, it is convincing that Yi Yin's hometown was in Heyang.

Heyang, known as "Youxin Country" in ancient times, is located in the northeast of Weinan City and on the west bank of the Yellow River. Heyang has a profound cultural heritage and enjoys the reputation of "Yi Yin's hometown, Book of Songs and Heyang", where Di Ku, one of the "Three Emperors and Five Emperors", sleeps peacefully. Thirty-one excellent works of The Book of Songs, such as Guan Ju, all came from or described Heyang, which gave birth to historical and cultural celebrities such as Yi Yin, the ancestor of cooking, and Master Yinguang, a modern Buddhist.

han li's masterpiece Heyangling Cao Quanbei was unearthed, and 31 folk arts such as marionette, dancing opera, face flower and swing were listed in the national and provincial intangible cultural heritage protection list. Known as the source of love poems in China, the hometown of folk culture in China, and the famous eco-food city of the Yellow River in China.