你好
nǐ hǎo
hello; hi
you (你) + good (好) = hello
A person greeting you with warmth: 好 depicts a woman (女) and child (子) together, an ancient image of goodness and wellbeing. Put them side by side and you have the classic Chinese greeting.
我每天见到她都说你好。
wǒ měi tiān jiàn dào tā dōu shuō nǐ hǎo。
Every day when I see her, I say hello.
他走进教室，向老师说了声你好。
tā zǒu jìn jiào shì，xiàng lǎo shī shuō le shēng nǐ hǎo。
He walked into the classroom and said hello to the teacher.