Heeeeeeey so we've talked some about Jinhae and Jiang, but I also have a small army of characters here who will definitely be in a position to cross paths one way or another with Jiang!
So immediately I can think of a few lines!
Luke is food and coffee motivated, even if he (like Asher) breaks out in hives just looking at a gym. There's definitely a chance that they've crossed paths at the various eateries. NGL, Jiang is the level of hot that makes Luke's brain malfunction so. Just a fair warning.
Zephyr and Erinn are both quite happy to donate to the cause should there be a need for it. Zephyr in particularly is very fond of letting strigele feed off of him.
Soobin is a fellow strigele and works with his sire who owns Heads & Tails, just by virtue of the nature of the lower level, I'm sure he's served Jiang a blood cocktail or two.
Ari and Felix are also highly food motivated and spend approximately 80% of their disposable income on baked goods.