In the 1980s, the author studied the pagoda of Yongning Temple in Luoyang, dating from the Northern Wei dynasty, but had to stop because of the lack of data. In the 1990s, two other architectural historians carried out restoration research based on new archaeological findings. After that, the author engaged again in the discussion: he proposed a new explanation model of the pagoda’s original state based on the number seven, in line with the rules of proportional design of Chinese and Japanese pagodas at the time. However, some questions remained open, and the author continued his research. In the following years, the author discovered the importance of the number nine in historical texts and excavation data for controlling the ground plan and elevation of the pagoda body； additionally, the author reevaluated the previous restoration of the central pagoda column made of adobe bricks. This article now presents the results of the author’s years-long efforts and his latest thoughts on how the pagoda of Yongning Temple in Luoyang could have really looked like.