The number of ghost temples probably has a great deal to do with the abilities that the Emperor can now harness!
This guy spent a great price, causing war in the north and deliberately facilitating Chen Qing's Dragon Palace plan in Jiangnan, all to covertly build the ghost temples remembered by Chen Baiye. The people in the Capital City feel extremely uneasy about those ghost temples, not to mention the many bizarre incidents that followed their increase—the entire atmosphere of the Capital City changed.
The Royal City of the Central Plains became eerie and sinister, and the major families, especially the Sorcerer Families, clearly felt uneasy and did not dare to confront the Emperor head-on, watching helplessly as more and more ghost temples were established in the Capital City by the Emperor.