16 words
Greetings and courtesy
The words you will use in the first minute of every conversation.
你好nǐ hǎohello
您好nín hǎohello, politely
再见zàijiàngoodbye
谢谢xièxiethank you
不客气bú kèqiyou're welcome
对不起duìbuqǐsorry
不好意思bù hǎoyìsiexcuse me
没关系méi guānxiit doesn't matter
请qǐngplease
是shìto be, yes
不是bú shìno, it isn't
好hǎogood, OK
对duìright, correct
早上好zǎoshang hǎogood morning
晚安wǎn'āngood night
欢迎huānyíngwelcome
Turn the pinyin off with the switch above and it blurs rather than disappearing. Tap any blurred line to peek at it. That is a better test than hiding it completely, because you find out whether you knew it or only nearly knew it.