For example, in the Vietnam War, both the mainland and Vietnam tampered with this history.

The most direct way is to read the history books of third countries. If you can't read them, you can only judge for yourself.

Judgment method:

The history of the mainland is written like this: we did not invade Vietnam, but Vietnam made the first move, and then we fought back before entering Vietnam.

Then let's look at the historical background. China says Vietnam began to dominate Southeast Asia. Then think about it. First, there were so many small countries in Southeast Asia at that time. Why did Vietnam choose a big country to start? Second, Vietnam failed one after another at first for two reasons. First, at that time, the main force of the Vietnamese army was fighting in Cambodia, and only some third-rate troops were on the northern line. The argument that they risked fighting on two fronts to challenge a big country is inherently problematic. Second, Vietnam was unprepared for the attack on the PLA. If the Vietnamese army made the first move, why were they unprepared?

Tampering with history is not a patent of the mainland, and Vietnam has also tampered with this history.

The history of Viet Nam is that the withdrawal of China's troops was not under the pressure of the international community, but after it was defeated by us.

It is also easy to prove the authenticity of this history. First of all, when the People's Liberation Army withdrew its troops from the occupied areas of Vietnam, it took away a large number of mineral resources in Vietnam, which made the mining industry in Vietnam not recover for more than ten years. If the PLA is really defeated by the Vietnamese army, will it let them take these resources away? Secondly, the Vietnamese army's coping strategy at that time was to deploy elite troops from Cambodia to fight against the "North Kou", but there was no exchange of fire between them and there was no record of any engagement. Then, did the victory mentioned in Vietnamese history books mean that the third-line troops in the north defeated the first-line troops of the People's Liberation Army? I don't think so.

The above is just an example, and the authenticity of other history can be demonstrated in a secondary way. The specific step is to understand the general historical background at that time, and then put in historical events that need to be demonstrated to see if there are obvious logical problems in those places. But this method is not simple, so reading the history books of third countries is the most direct method. Therefore, if the landlord has history and love, he can generally read more history books from different countries.