Man Walking Lane With A Cup

Walking a lane, a man with a mustache came from over there. He was walking while he had a stainless-steel cup in his hand. I didn't know why he was walking with a cup here.

Maybe he was adequately concerned about environmental issues. And he didn't want to use a disposable cup when he drunk a cup of chai at a chai stand. Although I heard there was a business to deliver chai, it was not common to see people who carry their own cup.