For directions: 左转弯 (turn left), 右转弯 (turn right). In casual speech, 转 alone is often enough: 左转 (turn left), 右转 (turn right).
culture
The phrase 拐弯抹角 (guǎi wān mò jiǎo) means 'to beat around the bush' — literally 'turning corners and wiping angles'. Chinese culture values indirectness in many social situations, but being too 拐弯抹角 can be seen as evasive.
