[X] Let Hanyi ride on your back and give directions, though Ling Qi remembered the ice child's weight well, they would still move faster this way… probably. You'll have to waste precious seconds convincing her without alarming her though.
Given the clarification that the weight will be a less physical weight and thus more likely to be a spiritual weight, I think that Ling Qi can handle it. Sixiang is able to increase our amicability and our manipulation is B so we should be able to convince Hanyi fairly easily, especially given the realm advantage.
Once we have her on our shoulders, we should be able to persevere through the increasing weight with Sixiang's help as well as SES giving us the perseverance to keep moving on. After all, it reduces the effects of spiritual debuffs.
The seconds lost from convincing Hanyi will be painful, but this way decreases the chances of us being separated and allows us to use our gown for flight if needed in an emergency. While I'm fairly positive that SCS doesn't allow us to bring people along with us through shadow or through using the dance, Ling Qi could get inspired if really pressed (kind of like how she manipulated FVM during Growing Pains).