gate of heaven, main gate of palace
閶 centers on a grand, important gate: the gate of heaven or the main gate of a palace. Both meanings point to a majestic entrance.
閶 combines 門 (gate) with 昌, which likely contributes the sound and may suggest brightness or prosperity, fitting a heavenly or palace gate.
The gate 門 encloses 昌, which looks like two suns 日 stacked, suggesting a brilliant, heavenly gate. Picture the main palace gate glowing with double sunlight.
For ショウ, imagine a grand show at the gate of heaven: show -> ショウ, and the gate opens to a spectacular performance.
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