Abstract: An air conditioning system includes: an air conditioner box, an upper deck main air duct, and two upper deck transition air ducts. The air conditioner box is disposed on a body of a double-deck vehicle, and includes two upper deck air outlets. The upper deck main air duct is disposed at a top of an upper deck of the body of the double-deck vehicle, and includes two upper deck air inlets. The two upper deck air outlets and the two upper deck air inlets are staggered in a horizontal direction. Each of the two upper deck transition air ducts is communicated with one of the two upper deck air outlets and one of the two upper deck air inlets. Inner walls of the two upper deck transition air ducts are in smooth transition with inner walls of the two upper deck air outlets and the two upper deck air inlets.

Abstract: Systems, methods, and non-transitory computer-readable media can present a grid-based content feed comprising a plurality of media content items, the plurality of media content items comprising a first video channel, and the first video channel comprising a plurality of videos. An indication is received that a user has selected the first video channel. The grid-based content feed is transitioned into an immersive viewer in which the first video channel is presented. The first video channel is presented within the immersive viewer.