Zhongli mimicking Paimon (JP radio program) 

This is taken from the 4th installment of "Teyvat official radio program (公式ラジオ　テイワット放送局)". It is a radio program which is broadcasted every Tuesday via RU-vid by the official Japanese Genshin Impact.
Guest:
Shun Horie (Aether)
Maeno Tomoaki (Zhongli)
Note: "Koga-chan" is referring to Aoi Koga who is the Japanese VA for Paimon.
Original video link:
• 【原神】公式ラジオ テイワット放送局 第4回