飞索 Traditional form: 飛索 Pinyin (reading): fēisuǒ Definitions: zip line Characters: 飞 - to fly, to dart; high 索 - cable, rope; rules, laws; to demand, to exact; to search, to inquire Traditional characters: 飛 - to fly, to dart; high 索 - cable, rope; rules, laws; to demand, to exact; to search, to inquire