What chapter is Tang's blocking an arrow for Huo?

Chapter 509 Tang blocked an arrow for Huo. In the peerless Tang Gate, Huo was named as Shura, and Tang was named as Dragon Butterfly or Winter Butterfly. The protagonist Huo and his lover (Tang) in Tang Sanshao's novel "Two peerless Tang Men in Douluo Mainland" can integrate three generations and four martial spirits.