Nanyang, Henan
Deng first met Liu Xiu when both were visiting and studying in the Xin dynasty capital of Chang'an, perhaps in 12. He befriended Liu as both were from Nanyang Commandery (roughly modern Nanyang, Henan). Later, both went back home, and Liu Xiu would eventually be involved in his brother Liu Yan's rebellion against Xin in 22. Deng apparently was not involved in any revolutionary activities against Xin at this point.