What are some of the reasons for the calm and strict German character?

1) Historically Germany has this tradition.

German proverb - punctuality is imperial courtesy.

In ancient times the Germanic peoples taught their children this. In Germany, "keeping time" has not only been recognized as a sign of upbringing, but is also proudly referred to by Germans as an integral part of German culture. Germans are also known worldwide for their punctuality. There is a saying in German: Punctuality is the courtesy of the emperor. In Germany, "keeping time" is not only regarded as a reflection of the degree of upbringing, but also proudly referred to by the Germans as an integral part of German culture. Where a little more formal activities, they must first make plans to invite people to guests or activities, usually one or two weeks before the invitation will be sent. An invitation to a formal event is accompanied by a reply slip, which informs the invitee that he or she should inform the host before the specified date if he or she is unable to attend. In this case, it is considered rude if the invitee does not respond. If there is a change in the schedule after accepting the invitation and you are unable to attend, you should notify the host as soon as possible so that he or she can make other arrangements. If you are more than 10 minutes late due to an unforeseen circumstance, you should call ahead and let your host know, as the waiting time for a late guest at a private dinner in Germany is generally no more than 15 minutes. Guests are expected to apologize to the host and other guests for being late. Therefore, to go to an appointment for a banquet, in case of rush hour traffic, be sure to leave the house early so as not to be late.

2)The Industrial Revolution period deepened this character. Whether in the production sector or the transportation sector, punctuality and rigor are essential to improve efficiency.

3) The Germans are martial. The army is what I do not need to say it, you can think of our People's Liberation Army army was what? Look at the style of the German army in World War II. Some friends say it is Hitler influence, he is not so big, a national character is a thousand years to form.