The first day of school in the China falls on 1 September, or the first Monday following if September 1 is a Friday, Saturday, or Sunday. In northeastern China, schools open on Monday in mid-August after summer vacation.
3) Improper heating profiles setting lead to unbalanced heating zones temperature inside heating furnace, which causes uneven glass temperature on both different parts of the glass sheet and between the top and bottom glass surfaces, thus may brings irregular white haze on glass surfaces.
In addition, wearing the glasses for too long a time can as well cause discomfort on the nose except in the eyes, because the nose have to bear part of the weight of your glasses without rest. Therefore, you should pay attention not to wear your glasses all day long without rest.