blessings, happiness
礽 centers on blessings and happiness, often in a spiritual or auspicious sense.
礽 combines 示 (altar, spirit) with 乃, which likely contributes the sound. The exact historical development is uncertain, but the structure suggests a phono-semantic compound related to blessings.
The left side 示/礻 suggests a spiritual altar. The right side 乃 looks like a person kneeling or bowing. Imagine receiving blessings and happiness while bowing at an altar.
For ジョウ, picture a joyful person named Joe receiving blessings at the altar: Joe -> ジョウ, and the happiness fills the scene.