Why is the life span of Jiang's descendants shorter?

There should be no problem with the state of Jing, but the state of Wei is in doubt.

Short-lived, from the perspective of geomantic omen, Chiang Kai-shek and Jiang Jingguo were not buried.

After Chiang Kai-shek and Jiang Jingguo died in 1975 and 1988, their coffins were temporarily buried in the Cihu Mausoleum and the Daxi Mausoleum in Daxi Town, Taoyuan County, respectively.