殷勤
yīn qín · HSK 7
eagerly attentive
🙇🍵 yīn qín sounds like in keen, and being keen is exactly being eagerly attentive
Decompose 殷 (abundant, ample) + 勤 (diligent, hardworking) = abundant diligence, i.e. fussing over someone politely and attentively. Think of a waiter who keeps refilling your tea (🍵) and bowing (🙇).