What do you mean by 19 this April?

April this year 19 refers to April 20 19 19, which is a traditional festival for ethnic minorities in China. Ancestor's Day is very important in Yi, Bai, Miao, Mongolian, Tujia and other ethnic groups, and it is a day to express respect and gratitude to ancestors. On this day, people will go to ancestral graves to worship, offer food and gifts to their ancestors, and pray for their ancestors to bless themselves and their families with peace and happiness.

April 19 is also a memorable day, because a fire broke out in Notre Dame de Paris, France, which led to the collapse of most churches and bell towers. The fire shocked and regretted the whole world. Church culture is an important heritage in human history, and this fire has also sounded the alarm for us to protect cultural heritage.

April 19 is still a special day, because on this day, NASA released the first black hole photo in human history. This photo contains the image of the black hole in the center of M87 galaxy, which promotes people's exploration and cognition of the universe to a new height. At this moment, mankind has stood at a higher level of science and technology, and has also started a new round of scientific exploration.