C201 This Kind of Frequency Was Unheard Of!

The sky was overcast, and the air hung heavy with moisture, threatening to unleash a downpour at any moment. This imminent rain cast a somber mood over the residents of the imperial capital.

A short distance from the Xiao estate, visitors intermittently knocked on the door of a secretive residence. Each arrived in a sealed carriage, clad in either gray or black attire