"...Wan" is stingy, so I might as well call it "Tianxia Walnut", but "walnut" is also a homophone for "joint escape", so I considered changing it to "Tianxia Zhihe". Considering that the letter covers other things and also sounds homophonic to "the peace of the world", I think it is quite grand.
I hope there will be opportunities for cooperation in the future.