What do you mean by "sky is the limit"?

Tianma Xingkong? [ tiān mǎ xíng kōng ]

Interpretation--Metaphor for being bold and unrestrained (mostly used in evaluating writing, painting, calligraphy, etc.).

Note--Tianma: The sweat-blooded horse obtained from Dawan (the name of an ancient country in the Western Regions) at the time of Emperor Wu of the Han Dynasty was called Tianma, which means God's horse. See Shi Ji - Dawan Lie Zhuan. Xingkong: describing the steed galloping, like flying in the air.

Origin--Yuan Liu Tingzhen, "Preface to Sa Tianxi's Poetry Collection": "What is so divine and beyond the surface of the crowd is like a heavenly horse traveling in the air and taking extraordinary steps."

Word Analysis:

[Positive pronunciation]行, cannot be pronounced as "hánɡ"; 空, cannot be pronounced as "kònɡ".

[Near Meaning]Spontaneous Dragon Flying and Phoenix Dancing

[Usage]Used to compare with quick-wittedness and unrestrainedness. Generally used as predicate and determiner.

[Structure]Subject-verb tense.

[Example sentence]The young calligrapher was in full view of all the people; he waved freely; as if ~.

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