2. Open the link of the background color material on the computer, select the background color part (all selected) and copy it into the edit box of the official WeChat account of the national public holiday day, and then modify the text.
3. Then you can see that the background of the graphic message of WeChat official account has turned gray, which is successful.
Extended data:
National Day of Public Holiday for the Victims of the Nanjing Massacre: It is to mourn the victims of the Nanjing Massacre and all the victims (including comfort women) who were killed by the Japanese aggressors in the Japanese imperialist war of aggression against China, to expose the war crimes of the Japanese aggressors, and to bear in mind the profound disasters caused by the war of aggression to the people of China and the people of the world, so as to show the firm stand of the people of China in opposing the war of aggression, defending human dignity and safeguarding world peace.
1937 12 13. The Japanese invaders began a 40-day massacre of China compatriots in Nanjing, China, killing more than 300,000 people and creating the Nanjing Massacre that shocked China and foreign countries. This barbaric act is a flagrant violation of international law and the Geneva Conventions, which is indisputable. After the trials of war criminals by the Far East International Military Tribunal and the Nanjing Military Tribunal, historical and legal conclusions have already been reached.