Ejiao can replenish blood and stop bleeding, and has the effect of calming the nerves. But it is sticky and easy to affect appetite, so eat it after meals. If you only eat once a day, you'd better eat it before going to bed at night. If it's not for curing diseases, but for preserving health, any season will do. However, eating in April of the lunar calendar has the greatest nourishing effect, and eating in winter is the best for protecting the heart. As Neijing said, eating Yin in autumn and winter can nourish Yang.