Tighnari and Cyno were walking in the desert trying to go somewhere till Tighnari got tired of walking 'cause of the heat he normally is in the forest part of sumeru and not the deserts. so Cyno is now giving him a piggy back ride to where they are heading, while Cyno was walking he was carrying Tighnari then Tighnari spoke:

Tighnari: "ugh...so tired..and so hot...." he groaned cause of the heat of the desert, being dramatic about the hot weather