Canola oil (refined rapeseed) is disgusting, but unrefined Chinese rapeseed has to be on a level of awful that is off the charts.
I have learned to scour preserved anything to make sure it does not contain canola oil. I cannot abide the taste.
Rapeseed oil is mustard seed oil. Rapeseed oil until recently, was an industrial oil that was used for paints and marine purposes, can be applied to surfaces underwater or something along those lines.
Canadian agricultural modified the mustard plant to reduce the mustard component and it is now safe, but we all know how that works. (They were looking for a crop that grew fast in short season high latitude climates.)
I will not use canola oil and will not buy a product if it contains it. Any claimed benefit (It has omega3 oils) is eliminated by they oil extraction method, and it also goes rancid very quickly. Won’t use.
Chinese have their really cheap oils - but the vast majority of the population there eats the same refined, bleached, deoderized vegetable oils as Americans do. Soybean is the largest, same as the USA