According to traditional customs, people around the world will visit the graves of their loved ones before and after the Qingming Festival or sacrificial festivals, and express their nostalgia through old customs such as setting off firecrackers and burning paper money, but this method is noisy It disturbs people, pollutes the environment, reduces trees, brings fire hazards, and troubles to clean up paper ash. It is out of tune with the spirit of the times, which is increasingly environmentally friendly and civilized. Therefore, the relevant departments now have regulations or restrictions on the methods of offering sacrifices in cemeteries, canceling or partially canceling the old traditional methods that do not conform to the modern spirit. In the beginning, people always put some iron boxes at the crossroads before and after the Qingming Festival, so that worshipers could Burning paper money in the iron box solves the problem of difficulty in cleaning up the paper ashes. Later, what was waiting for them were: flowers, tree planting, readings, origami boats, and "Paradise Mailbox" ("Paradise Mailbox is to use special letterheads and pens provided free of charge by the cemetery to write in memory of relatives and express family affection and grief.) , Online memorial service (that is, you can click the mouse on the memorial webpage to offer flowers, incense, candles, fruit offerings, song requests, etc. to your loved ones.)...these are civilized ways of memorializing.