share time: 2026-06-28 00:36:14
When Lin Wan's startup failed, she borrowed life-saving money from her best friend Su Qing, who left a fingerprint-locked tin box labeled "IOU" with an unspoken secret. Years later, Lin Wan became successful and visited with principal and interest, only to find no loan receipt inside, but a repayment receipt from when Lin Wan was pressed by loan sharks, with a note on the back: "I paid off your debt for you——this IOU is the promise I dared not mention most in my life". It turned out that Su Qing used her lifetime savings to help her through the desperate situation. When Lin Wan asked, Su Qing wiped tears and smiled: "You said you'd rather die than let the company collapse back then, I couldn't let you down". This IOU across time became the most precious proof of their friendship.
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