顾客至上

the customer reigns supreme (idiom)

surname Gu

to look after / to take into consideration / to attend to

client / customer / CL:位[wei4]

customer / visitor / guest

to arrive / most / to / until

supreme / paramount / above all else

used in 上聲|上声[shang3 sheng1]

(bound form) up; upper; above; previous / first (of multiple parts) / to climb; to get onto; to go up / to attend (class or university) / (directional complement) up / (noun suffix) on; above