Thankful SBTI type
“You give once. I owe thrice.”
Never-depleting positivity tower, but the transmitter runs on their own battery
Typical behavior
Says 'thank you' four times to the delivery guy. When someone does a small favor, sends a red envelope + a message + buys coffee next time as repayment. Never complains about bad service. But inside, they keep a strict reciprocity ledger — if someone doesn't acknowledge their thanks, they'll be quietly hurt but never say it.
Signature scene
A coworker grabs them a bubble tea on the way. THAN-K immediately messages 'thank you so much! lunch is on me!', then sends 30 yuan by transfer, then buys pastries the next day. Coworker: 'that tea was like 18 yuan.'
Hidden side
You meet every kindness with full-throttle gratitude. Not politeness — a discipline you learned young: being helped equals being in debt. The coffee, the 30 yuan, the pastries the next day — you're chipping away at the stone in your chest. But what hollows you out isn't unreturned favors. It's "mhm" replying to your "thank you." You stare at that "mhm" for ten minutes, replay the conversation three times. You weren't thanking them for the 18-yuan tea. You were thanking them for treating you like someone worth being kind to. This sensitivity makes you the most attentive one in every close relationship. The cost: you're always waiting for an echo that doesn't come.