Personification. Nature doesn’t technically work or build, so it is given human like quality here. The literary meaning is that nature is - powerful force of both creation and destruction.
Explanation: re·flect
/rəˈflekt/
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verb
past tense: reflected; past participle: reflected
1.
(of a surface or body) throw back (heat, light, or sound) without absorbing it.
"when the sun's rays hit the Earth a lot of the heat is reflected back into space"
think deeply or carefully about.
"he reflected with sadness on the unhappiness of his marriage"
