My 10month old LO is having flu now. Mil suggest to give baby drink 'Ling Yang' (antelope's horn /Cornu Saiga tataricae) water and barley water. Is it ok?

Ling Yang and Barley are both cooling drinks, so I'm not sure if it will assist in flu recovery. I use the same method as Siow Yeng, which is to spray sterimar then suck with a nasal aspirator. Besides that, at night I use a home remedy of placing a cut onion in my LO's room. It's said that onions have amazing antibacterial and antiseptic properties, so by placing a raw onion placed next to a sick person could suck the sickness right out of them. Not sure how true it is, but it's very effective for my LO. You can try if for 2 nights and see if it helps. Speedy recovery to your LO.