Can life span be exchanged for treasure? I am invincible with infinite life span

Du Feng really thought that his disciple had fainted inside. Seeing that Lu Qingan was safe and sound and even came out for a stroll, although he didn't know what Lu Qingan was doing, as long as he was fine, it was fine.

Moreover, it seemed that his disciple seemed to have made some special discoveries. This also proved that his disciple was really a formation master.

Chen Changsheng was also very surprised at this moment. Then, under the gaze of everyone, he flew to the treasure and circled around the treasure like Lu Qingan. Then he found that in a corner of the treasure, there was a line of extremely small fonts that only formation masters could see and were hidden by small formation tricks.

[This treasure belongs to the strongest formation master in history, "Tu Zhengxing\