CTRL+Space to activate chinese pinyin writing, then choose the good caracter as this :
CTRL+SPACE open a console
when you type nihao
你好 it will be underlined, then just press space again and you got it. If the caracters are not good (尼号for example) then you can choose others by using left arrow then the number of the caracter. For example when you type "ni" there will be :
你，尼，拟.... and more, use left arrow then 1 for 你，2 for 尼, ect..
Hope you understood
I know it's not clear, I dont know how to explain it