There is a Singapore movie. It's about brother and sister having only one pair of shoes to wear. What's the name of that movie?

You're talking about little shoes, Iranian director Majid Makidi.

The story of Little Shoes is simple: Little Harry accidentally lost the only pair of shoes repaired by his sister. In order to escape the punishment of his parents, he begged his sister to reach an agreement with him: every day his sister wears his shoes when she goes to school and changes them for him after school. So the only pair of shoes of brother and sister are exchanged on their feet every day, and the desire to find the lost shoes or have another pair of shoes is accumulating day by day in the two young hearts, because they have to avoid the punishment that their parents and lateness may bring, to bear the inconvenience caused by changing shoes, and to avoid the torture caused by envy of other people's shoes. Harry tried to work with his father in the city to earn money, but his father was accidentally injured and spent all the money he had promised to buy shoes for his sister to treat the disease. Later, Harry saw the mayor's notice to run the competition, and finally begged the teacher to approve him to take part in the competition, because there was a pair of shoes in the prize of the third runner-up in the competition. In the competition, Harry was running, and his eyes were shaking at the footsteps of his sister running back to change shoes with him after school, and then running to school. He wanted to win, he wanted to get those shoes, he was running, he was very tired, and then he fell down. In order to win, he got up and ran to the finish line, leading in the chaos. When people congratulated the little champion, Harry raised a pair of disappointed tears. When I got home, my sister walked away sadly. Harry took off his shoes-they were completely worn out. Harry soaked his blistered feet in the hospital pool, and a group of fish swam towards him. At this time, his father is on his way home. On his bike, there are new shoes for Harry and his sister. ...