To build bridges and repair roads; (figuratively) to do good deeds, especially by contributing to public welfare and making generous donations.
老张退休后，依然热心公益，经常参加修桥补路的活动，为大家带来了许多便利。
After retirement, Old Zhang remained enthusiastic about public welfare, often participating in activities like building bridges and mending roads, which brought much convenience to everyone.
Era:
Ancient
Frequency:
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