HSK 7-9
改观
gǎiguān动
change of appearance; to revise one's point of view
整治后河岸环境明显改观。
Zhěng zhì hòu hé àn huán jìng míng xiǎn gǎi guān.
The riverside environment improved markedly after the cleanup.
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Appears across levels (7-9) in the HSK 3.0 word list.