As many of you know, Zhongli has been buffed as of update 1.3. They added a resistance shred to his shield, which is nice for buffing your main DPS off field. The Jade Shield gives a debuff of -20% to all elements as well as physical. His Jade Shield has a duration of 20 seconds, with a cooldown of 12 seconds, effectively having 100% uptime. The range of said debuff is shown below in the picture, along with a video should you desire a more accurate representation of the distance.
The Unusual Hilichurl was chosen as it does not move.