I usually hate the really blatant product placement (especially if it's like in the MDZS donghua where ice cream is just so weirdly out of place) but I didn't mind it as much in this for three reasons. 1. Wen Kexing eating walnuts (and Zhou Zishu being majorly grossed out by them) is a recurring thing/running gag in the novel so a nut product placement is hilariously fitting. 2. They actually call it out as product placement on the show and I respect that haha and 3. The sponsor deal apparently helped this show a LOT and I like the show so I'm fine with this.