C501 Killer Weapon

Tang Yu Xuan looked at Gu Ling Shen and asked with a smile, "Brother-in-law, your relationship with my sister is so good. Do you have some exclusive secret manual to share it with your brother-in-law?"

Tang Yuxuan had a fawning expression on his face, making Gu Lin feel as if everything was planned out by Tang Yuxuan.

However, after thinking about it for so long