Why Japanese not spell Onyomi kanji characters in the same way as Chinese ?

Some Japanese Onyomi spelling is based of archaic Chinese pronunciation (middle Chinese) and some dialects of eastern Chinese. These archaic Chinese pronunciation and eastern Chinese dialects have some difference with Mandarin and northern Chinese dialects pronunciations, so they are looks different.

*Example characters pronouncing same in Chinese Mandarin and Japanese Onyomi.

爱 Ai is pronouncing same in Chinese Mandarin and Japanese Onyomi Ai.

新 Xin is pronouncing same in Chinese Mandarin and Japanese Onyomi Shin.

心 Xin is pronouncing same in Chinese Mandarin and Japanese Onyomi Shin.

安 An is pronouncing same in Chinese Mandarin and Japanese Onyomi An.

Example: 安心してください An shin-shite kudasai Please don't worry.

茶 Cha is pronouncing same in Chinese Mandarin and Japanese Onyomi Cha.

三 San is pronouncing same in Chinese Mandarin and Japanese Onyomi San.

*Example characters pronouncing different in Chinese Mandarin and Japanese Onyomi but have similar pronunciation with some Chinese eastern dialects.

二 in Chinese Mandarin is pronouncing Er but in Hokkienese is pronounce Ni and Cantonese is pronounce Ji similar with Japanese Onyomi Ni and Ji.

五 in Chinese Mandarin is pronouncing Wu but in Hokkienese and many eastern Chinese dialects is pronouncing Ngo or Go similar like Japanese Onyomi Go.

世界 in Chinese Mandarin is Shijie but in Hokkienese and Chinese eastern dialects tend to pronouncing it as Sekai, similar with Japanese Onyomi Sekai.

日本 in Chinese Mandarin is Riben similar with English pronunciation Japan. In Hokkienese it's tend to pronouncing as Nippon similar with Japanese Onyomi Nippon.

How Do You Enjoy Your Life All Alone Eventhough You Don't Have Anyone ?

 Based on my real life after my mom passed away, living alone is not bad, especially when your body fits and you have relatively stable financial. Living alone in modern times with internet connection and certain degree of freedom would be great than lived in heaven.

But it's also have bad side as well, especially when you faced big problems and troubles alone, or when you get sick and stressful moments alone. You may will constantly get panic when you can't handle or solving the problems alone. Nobody you can ask for help or just ask some advices. People very apathy and selfish with themselves. Sometimes you may will experiences unstable emotion, you sad alone, angry alone and talking alone with yourself. But every person have different experiences and respond to faced loneliness.

Introverted person usually have strong mind, adapted well with situations and can stand more longer when faced loneliness.

No matter your loneliness just temporary or permanently(?). It's a mixed feeling when you lived alone. It's have good side and bad side also. The most important thing is lived alone must thinking smartly when faced any problems.

Life only just once, so if you must fight alone, then don't hesitate it !

Is Being a Scientist a High Stress Job ?

As long as they enjoyed the job, being a scientist is a less stress job. They are rarely quit from this profession.

But being a scientist is uneasy thing, you need strong mentality and tirelessly to keep focus with your subject in research, explorations and improvements, example like Marie Curie with her Radium research.

Not all people can being a scientist, if you are not scientist type, it's would be very stressful to handle some scientific tasks.

Being a scientist needs genuine deeds and long term dedications.