It's not that Chen Yin's status is less noble than Du Xixi and Ke Lian; rather, the director's household doesn't have much gourmet food to offer. Giving a few days' worth, considering Du Xixi and Ke Lian's distinguished identities, is still acceptable.
But for Chen Yin? It's not that they don't want to provide, but there's no extra food available.
Seeing the familiar delicacies, Du Xixi and the other two displayed subtle expressions, though the three across from them evidently were curious about these new dishes. Even the viewers in the livestream discussing the tableful of dishes seemed oblivious to the trio's odd demeanor.
Du Xixi had already mentioned treating each other as equals, so there was no rule about who should start eating first. The meal, quite delicious, left everyone in a pleasant mood. After the robot cleared the plates, everyone lingered at the table, not wanting to leave.