"I can tell! Putting aside the literal meaning, we've pretty much exposed each other's secrets." Lin Xiaosu rolled his eyes and stepped down the hill.
He knows everything about Ding Ruoshui.
Ding Ruoshui also basically knows everything about him, knows his methods, knows his relationship with Qianlong...
That's the meaning of "secrets" here.
Ding Ruoshui caught up: "So, whatever actions you take next, you shouldn't hide them from me!"
"Next... there's really no action!" Lin Xiaosu said: "You go back to your Jiangcheng villa, cozy up with your mom, flaunt your grandeur in the vast Jiangcheng, and I'll return to Fengcheng and play detective."
"That's boring!" Ding Ruoshui said: "My master won't tell me what's next, and you won't either. What's this? You've teamed up with her while I'm just an outsider now?"
"You're heartless!" Lin Xiaosu sighed: "Your master's affection for you and my love for you, have you received no signal at all?"
