Hóngshù shì yīgè chángjiàn de Rìběn nánxìng míngzì.
Hiroki is a common Japanese male name.
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culture
宏树 (Hiroki) uses characters meaning 'grand/magnificent' (宏) and 'tree' (树). It is a popular male name both in Japan (written 宏樹 and read Hiroki) and occasionally in China.