urgent, in haste, hurriedly, help
勷 centers on acting with urgency and haste, often to provide help. The meanings 'urgent', 'in haste', 'hurriedly', and 'help' connect through the idea of rushing to assist.
勷 combines 力 (strength, effort) with 襄, which likely contributes the sound and may relate to helping or urgency. The exact historical development is uncertain.
The left side 襄 looks like a person rushing with clothes flapping, and the right side 力 is strength. Imagine someone hurrying with all their might to help in an urgent situation.
For ジョウ, picture a person shouting 'Joe! Joe!' while rushing to help: Joe -> ジョウ, and the urgency is clear.