Meet the sisters, aged six and seven, who have a two-and-a-half hour trek to get to school in Hong Kong
Sisters travel from Shenzhen to their primary school in Wong Tai Sin

Six-year-old Ma Ho-chun and her sister, seven-year-old Ma Wang-ka, spent 2-1/2 hours getting to their school in Wong Tai Sin yesterday from their home in Shenzhen on the first day of the new school year.
But they only got a chance to have breakfast almost four hours after they woke up at 6am.
"It's only 6 o'clock. Who gets up so early?" Ho-chun complained weakly while yawning as she got up and sat on her bed with her eyes closed. The alarm clock in the room was blasting Helping Twilight Win the Crown, a song from children's film, My Little Pony Equestria Girls.
Yesterday was Ho-chun's first day at primary school and Wang-ka's first day in Primary Two. They were among some 25,000 children living on the mainland who will cross the border every day to attend Hong Kong schools.