Emperor Yuanyou said with a smile, "whoever wants his Hai Dongqing, I just teased for a while, and then my mother turned the corner to remind me not to play with things. Instead of giving these things, I look forward to new progress in the development of firearms on his side.",Sun turned to himself, gave him a push and scolded him in a low voice: "the old man is not serious!",was nothing unusual, but Chen Tingjian found that there was a faint smile when the fourth man's eyes glanced over him.。