On the evening of September 19th, it was cloudy. The modeling trip in Ningxia was not going smoothly. Many modeling points could not be accessed due to various human-related reasons, most of which we only learned about after arriving on site. This greatly affected our schedule and significantly reduced efficiency. The extremely important Baisikou Twin Pagodas were inaccessible due to road construction, so we had to quickly decide to abandon them and rush to Hongfo Stupa before sunset. Fortunately, we encountered no obstacles while modeling at Hongfo Stupa. It was located in a rarely visited crop field with excellent lighting. This was the only consolation of the day.