Why did the soldiers on the front line of Laoshan put forward the slogan "Long live understanding" in the counterattack against Vietnam in the 1980s?

At that time, due to the reform and opening up, some people's thoughts were seriously right-leaning or capitalist liberalization. They even regretted that they could not completely deny the new China, and described the new China as a destruction and crime against the Chinese nation in China, so that they also made verbal attacks and mental injuries to PLA soldiers who fought bloody battles for the new China on the southern Sino-Vietnamese border. It is nothing more than saying that they are stupid soldiers and it is not worth dying. They get a few dollars' pension directly after their death, which is indirectly said to be in defense. In short, the original ideas and values have been impacted. Those who want to be traitors and lackeys themselves and those who are crazy against * * * take every opportunity to hurt our soldiers in a relaxed political environment for economic development, and some impetuous civilians also join in. This damn piece of garbage. This hurts the hearts of many commanders and soldiers who encounter similar situations after entering the city, because the war damage on the front line of Laoshan is at the cost of desperate fighting. When the battle came again, many of our soldiers insisted on their values of being educated in the army, died for their country, died alone with a cold heart, and even died on purpose, just wanting to leave this vulgar, despicable and indifferent world and be with their dead comrades. This is the sorrow of the hero and the sorrow of this nation. Therefore, the soldiers shouted "Long live understanding" to show that they were not fools. They are not fools who fight and sacrifice only for the interests of the country and the people. Unfortunately, the situation was not completely controlled, which led to the riots in 1989. What kind of chaos is that? It's too polite for criminals who kill and set fires and ignorant students who make a fuss at random.