In front of the bank counter at #交易手续费揭秘 , Old Zhang clutched a crumpled remittance slip, his fingers trembling slightly. The fee section mentioned "2%", and he calculated it three times, still finding it thirty yuan more than last year. The wealth manager at the adjacent window was enthusiastically introducing a "Supreme VIP Fee Waiver Package" to a suited customer, and the reflection on the glass made Old Zhang squint.

Back home, he dug out the remittance records sent by his son from abroad, discovering that each transaction had been stripped of two layers of skin — charged once here, deducted again there. During a video call that night, his son smiled and said: "Dad, now we use blockchain for transfers, and the transaction fee is only a few dimes."