Zhao： Would you like to come to my home and celebrate the Mid-autumn Day with my family tomorrow？
Sue： Mid-autumn Day？ I thought it's going to be the National Day.
Zhao： You thought right， but this year both holidays happen to fall into the same week， quite a happy coincidence.
Sue： Why is that？
Zhao： Because the Chinese National Day is October 1st of the solar calendar， while Mid-autumn Day is August 15th of the lunar calendar， which is the official calendar in China until modern time.
Sue： So do you dress up for this day？
Zhao： There is no need to. It's a time to observe the beautiful round moon and enjoy moon cakes.