Agreed, but Navia will stay on-field most of the time, so Ningguang’s damage won’t matter much. Also, Zhongli makes it much easier to consistently trigger crystalize reactions with his e-skill, and since Navia will be protected by his shield all the time, geo resonance will stay active all the time, which makes a big difference in Navia’s damage, so overall Zhongli is much better IMO. But yes, if you don’t have Zhongli, you can use Ningguang.