HSK 7-9
上行
shàngxíng动
(of trains) up (i.e. towards the capital); (of river boats) to go against the current; to submit (a document) to higher authorities
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.