それがねえ。どうやらミホヨのHonkaiは日本語が語源らしいんだ。中国語の崩壊はベンファイ

The word “Honkai” based on the Japanese 崩壊 (ほうかい, “collapse” or “decay”), pronounced “hōkai”, which is the direct translation of
the Chinese 崩坏 (bēng huài) used in the original Chinese title.