He is in his twenties. His age is 27. David’s current address is 931 W 31st Pl, Chgo, IL. Five persons linked to this address. Their name are Pu Feng, Micha Kaminski, and three others. David has one phone number registered: (312) 730-6708 (At&T Corp). Two persons, including David Iang, Pu Feng, listed the phone number (312) 730-6708 as their own, various documents indicated