Gǎi / biàn / qū / xiàn / de / qǐ / diǎn / hòu / xuán / zhuǎn / zhǐ / biāo / réng / rán / bǎo / chí / bù / biàn改变曲线的起点后,旋转指标仍然保持不变。After the starting point of the curve was changed, the winding number remained unchanged.