1, mainly depends on the nationality and household registration on the ID card.

Don't think that only China can label the nation, and foreign countries also have this level.

2. Judging Jews mainly depends on their bloodline, mainly on their appearance.

Jews have a thick beard, which is one of the biggest characteristics. Jews don't shave because of violence), have a high nose (unlike other European and American people, whose nasal bones are higher at both ends) and a long and narrow face (even obese people, it is difficult to change their faces); If you can't tell the difference, you will take out a vernier caliper to measure the size of the nasal bone.

Of course, there are mistakes when relying on this, but mistakes are bad luck. Unless you have a fairly hard relationship and prove that you are not, you can only be released, or you can only go to a concentration camp.

3. Jewish customs.

There is a Jewish custom that a man should be circumcised on the sixth day of birth, that is, circumcised. The scar left after the operation will last a lifetime.

4. Religious habits

Most Jews believe in Judaism, and the settlements are around the synagogue, so it is easy for the German Nazis to isolate the Jews in the unsuspecting Jewish settlements in the early World War II.

And I will pray at a fixed time every day (I pray every day) and will not stop praying violently.

Jews are very reluctant to be assimilated. They firmly maintain their own national characteristics all over the world. (Except China) It was precisely because they were significantly different from their surroundings that they became the targets of the Nazis.

Every time they occupied a place, the SS, the Gestapo and the Hitler Youth League went door to door in the street. Those who met the standards were taken away by the SS, either directly shot or thrown into concentration camps.