Since the man did not reveal his identity, Chu Mu still wanted to let Liu Binglan and Elder Liu know that he was alive and well. He figured they had been worried about him over the past year.
After some inquiry, Chu Mu learned that Liu Binglan and Elder Liu were temporarily staying in World City. Due to threats received by World City, the Three Major Palace Powers had successively dispatched some of their forces back to the city.
Most of Soul Covenant's forces were in the Wanxiang Realm. Although the World Realm was somewhat resource-deficient, if they were defeated in the war against the Soul Covenant, the Three Great Palaces would retreat back to the World Realm, creating a hostile state between the two realms. Thus, the World Realm was key.
Chu Mu wrote a letter inside Soul Hall, placing a small vessel in the letter and infusing his Soul Sense into it.