Sakuya: The Scarlet Devil Mansion is broken again. Mr. Zhongli, do you know how to fix it?
I know a thing or two.
Youmu: Lady Yuyuko has quite an appetite today, and I can't keep up with the cooking! Mr. Zhongli, can you cook?
I know a thing or two.
Meiling: Morning, Mr. Zhongli. Want to spar for a couple of rounds?
I know a thing or two.
Yuuka: Zhongli? Just in time. Come help me prune these flowers.
I know a thing or two.
Patchouli: Mr. Zhongli, about the inertness of the Geo element...
I know a thing or two.
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Reimu: Zhongli, there's another incident! Hurry and use that amazing knack for knowing a thing or two to figure something out!
I'm afraid I must decline, Miss Reimu. Please take your work seriously. (Contractual integrity.jpg)
It's okay if you don't know Touhou or Zhongli! The author will carefully explain every character, and I'm sure they'll tell you a great story! (And pull you into the rabbit hole.)