sacrifice
朓 centers on the act of offering something valuable, especially in a ritual context: sacrifice. The meaning is narrow and concrete.
朓 combines 月 (moon) with 兆, which likely contributes the sound. The connection between moon and sacrifice is not obvious from the modern form, and the exact historical development is uncertain.
The left side is 月 (moon), and the right side is 兆 (omen). Picture an ancient ritual where a sacrifice is offered under the moon when an omen appears.
For チョウ, imagine a chief named Chou performing a moonlit sacrifice: Chou -> チョウ, and the chief offers the sacrifice.
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