HSK 5
信封
xìnfēng名
envelope
请把写好的信放进信封。
Qǐng bǎ xiě hǎo de xìn fàng jìn xìn fēng.
Please put the completed letter into the envelope.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 5.