Add spaces: Passengersmaybringupto20kgofbaggageincluding5kghandbaggage.

Answer: Passengers may bring up to 20 kg of baggage including 5 kg hand baggage.

Add spaces: Securityfirst:Thedooronlyopensafterasafetyenquiry.

Answer: Security first: The door only opens after a safety enquiry.

Add spaces: RepresentativeArtworks:PortraitofYoungLadyinBlack,AfterglowatYunStand,EarlySpring,QiuRiverOvertheRain,SmallHouseintheLake,SnowCharms,UnfrozenRivulet,HarvestAutumnofSouthoftheRiver

Answer:
Representative Artworks: Portrait of Young Lady in Black, Afterglow at Yun Stand, Early Spring, Qiu River Over the Rain, Small House in the Lake, Snow Charms, Unfrozen Rivulet, Harvest Autumn of South of the River