力气
lì qi
physical strength
strength (力) + vital energy (气) = physical strength
力 depicts a flexed arm or plow, evoking muscular effort. 气 refers to the inner vital energy animating the body — together they cover both the outward force and the inner fuel behind physical power.
搬这个箱子需要很大的力气。
bān zhè ge xiāng zi xū yào hěn dà de lì qi。
Moving this box requires a lot of physical strength.
他每天锻炼，身上的力气越来越大。
tā měi tiān duàn liàn，shēn shang de lì qi yuè lái yuè dà。
He exercises every day, and his physical strength keeps growing.