I'm from HK and I find this thing online selling at 175USD. It is a AIO from PCcooler usinga a traditional air cooler as CPU waterblock.
https://item.jd.com/13699511839.html
It really got me thinking about this thing and i find a blog talking about this thing.
https://read01.com/4DnMRjR.html#.W5Ar0egzZPZ
It got the reservoir in the air cooler and the pump is in its radiator.
I'm wondering if we remove the radiator and use the waterblock with a custom loop, it maybe something. But sadly I can't find its name in English.
UPDATE!
I did find it on aliexpress
https://www.aliexpress.com/item/PCCOOLER-frozen-dual-engine-cpu-radiator-air-cooled-with-water-cooled-combination-four-heat-pipe-three/32855896957.html?spm=2114.search0204.3.2.2aeb7403BM4jet&ws_ab_test=searchweb0_0,searchweb201602_1_5015211_10065_10068_10059_10696_100031_5015311_10084_10083_10103_451_452_10618_10307_5015911_5016011,searchweb201603_55,ppcSwitch_7_ppcChannel&algo_expid=89943553-6abf-4301-90c2-abc0c1190445-0&algo_pvid=89943553-6abf-4301-90c2-abc0c1190445&priceBeautifyAB=0