You’ve Got Mail: The Perils of Pigeon Post – Fei Ge Jiao You Xu Jin Shen (Novel), Vol. 2

Lonely, poor, and pushing forty, Wu Xingzi doesn’t have much to live for. In fact, the only thing he has going for him is the perfect funeral plot he’s picked out for himself… That is, until he stumbles across the Peng Society and their monthly volume of personal ads for gay men.
At first, he’s just looking for friendship with like-minded people, but when he finds out that it’s customary for members to respond to polite letters with shockingly detailed ink drawings of their, ahem, intimate anatomy, Wu Xingzi quickly gains a new purpose in life: collecting phallic illustrations through the pigeon post!

There’s just one problem. His favorite two-dimensional specimen belongs to a man who’s intent on thrusting himself into Wu Xingzi’s life in a very real, firm, three-dimensional fashion…