불러오는 중…

Chinese folktale (Han Feizi)
A little boy cries to go with his mother, and she makes a quick promise just to calm him down. But when she comes home, her husband Zengzi insists on keeping that promise exactly as spoken. (Honesty·Keeping Promises)
This is a translation
Original book: 증자살체 — 약속을 지킨 증자