敬上

yours truly / yours sincerely (at the end of a letter)

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

to respect / to venerate / to salute / to offer

(bound form) respectful; to respect / to offer politely