China exterted considerable cultural influence on Japan for many centuries. Writing, Buddhism (through Korea) and Confucianism are all cultural loans made by Japan. Tokugawa society was a socially hierchical society with a clear place for individulas in it. Respecting social hierarchy is a major Confucian idea.
The elemental classification for oxygen would be non-metal. It is located in period number 2 and group number 16. It has an atomic number of 8. At room temperature, it exists as a gas. Hope this answers the question. Have a nice day.