The Only Child, by Goujing, Schwartz Wade, 2015.
This book is heart-stoppingly gorgeously illustrated. The wordless story is poignant and conveys the sense of loneliness felt by a child growing up under China's one-child policy. But my son, who is an only child, did not understand the child's deep loneliness and longing. I kind of wish that the US title had been changed to "The Lonely Child", because, 1) not all only children are always lonely; and 2) children with multiple siblings can feel this depth of loneliness.