初级中级高级混合场，不限水平，报名者请菜鸟友好。 提前24小时可以随意退，24小时内退扣费，一报多提前72小时退。 欢迎加入，可以加组织者电话即微信！ 中羽联上的定位有偏差，初次来请导航上海体育馆6号口。 Mixed Level event All levels are welcome, please be friendly to beginners. You can cancel at any time up to 24 hours in advance without penalty. Cancellations within 24 hours will incur a fee. For group bookings, cancellations must be made 72 hours in advance. We welcome you to join! For more information, please contact the organizer via phone or WeChat.