[Arctic Cold CP self-cut leg meat can be regarded as a parallel space-time paro line. Parts of the original text are quoted from the original book, but some have been deleted due to differences with the original work.
Part of the reference is the setting of Duan Dao's childhood sweetheart + engagement partner, which was even speculated by netizens on site b. Because the Prince of Yanqing "died", Dao Baifeng was remarried to Duan Zhengchun. Later, the two met again in Tianlong Temple. Things were different, but they loved each other, and thus they had Duan Yu's son.
A bug that partially explains why Duan Yanqing was able to resurrect with full health when he was dying twenty years ago. Moreover, the part where Dao Baifeng died for his love Duan Zhengchun was set up to escape from death.
Concept: If Duan Yanqing and Dao Baifeng were true love