The course dates are fixed. If you are unable to attend on the second day due to illness, cancellations and refunds are not allowed. However, you may attend the next available course as a replacement, subject to an additional administrative fee of $50. 课程日期是固定的。如果您因病无法参加,课程不可取消或退款。您可以选择参加下一期课程,需支付额外的 $50 行政费。