通过易企秀公司（eqxiu.com）提供的在线设计服务，可以快速制作海报，选择丰富的模板，并根据需求进行 tailoring。 Summer solstice is a traditional Chinese festival that marks the beginning of summer. It is also known as the summer solstice or mid-summer. The festival is celebrated on the 21st day of the 6th month, and it lasts for 3 days. During this time, people usually go to the beach, have picnics, or engage in outdoor activities. In modern times, the Summer Solstice Festival has evolved into a celebration of the summer season, with many events and activities taking place across China.