The main factor is Craftsman spirit, derives from Japanese mind, developed in a long history. Examine Japanese History distributed mainly two periods.

One is Japanese Spirit which has been refined under the one government (Government of Edo) for 260 years from about 400 years ago. This government was long run of unequaled anywhere in the world. In this period, many institutions (Small private schools) were founded by the sophisticates and they educated the children. We say by now, they became the base of the School.

These institutions educated Public habit, Moderation, Diligence, Obligation(Justice) & Sentiment (Human feeling) and Pursuit of the beauty for a long time on the straight. It becomes sublimate as steady Japanese Spirit.

However, outside of Japan as closed society, Science and Technology in the world advanced explosively through the Industrial Revolution. Japan lagged behind other county for this aspect.

Second is the road how to get over this delay. Japan was requested by another country who has leaded Technology to open the closed society. Japan opened a country in 1868. The culture from overseas has entered to Japan at a stretch.

Many society usually became a colony of the another country.

But Japan has received the own way based by his intelligence developed in the previous generation: Japanese has not answered the culture in the negative, and received it. Japanese has level upped it with the mind to learn thoroughly. It goes without saying, we have the spirit refined in the previous generation on the base. Japanese could do such thing.