give helping hand
攙 centers on offering physical assistance: giving a helping hand, supporting someone by hand, or lending a hand in a task.
攙 combines 扌 (hand) with 毚, which likely contributes the sound and may relate to the idea of assisting or supporting. The exact historical development of 毚 is uncertain.
The hand radical 扌 beside the complex 毚 suggests a hand reaching out to help with a difficult or intricate task. Picture lending a hand to untangle the complicated shape on the right.
For セン, imagine a helping hand reaching out to a friend named Sen: Sen -> セン, and your hand supports Sen in need.