This word is an irregular traditional Chinese character "Xie". Please see the explanation of "Ni Kuanzan" on the Internet (see Baidu Encyclopedia "Ni Kuanzan"). The words written by ancient calligraphers were not all in line with the norms, and some were used to writing at that time. "Harmony leads to Li Yannian" means to harmonize the melody (an ancient musical instrument to correct the melody, which was later referred to as melody or melody) and make it harmonious, so Li Yannian came into being. "Xie" means to coordinate and make harmony.
Interpretation of Chu Suiliang's Regular Script by Ni Kuanzan (Part)