After a poor harvest, a fisherman travels far upriver to bring back fish for his village. He discovers paradise in a hidden valley, where people live in peace and plenty, having escaped the outside world centuries ago during the chaos of the Qin empire. When the fisherman returns home the local lord orders him to show him where this valley, but their long search fails and the valley is never found again.
In Chinese, the name of the valley, Peach Blossom Spring (世外桃源) is a common expression meaning paradise, utopia, Shangri-La. The problem is that as a story there's not much to it - man finds hidden paradise - that's it. There are no interesting characters, and nothing interesting happens, so as a children's book it's doomed from the start - beyond the depressingly educational aspect of explaining to kids the background behind the Peach Blossom Spring expression.
But the story is something that is held dear in Chinese culture, not surprisingly after millennia of wars, famines and floods. Originally recorded by Tao Yuanming (陶渊明) during the 5th century Jin dynasty, it here chosen for a Sino-Japanese collaboration. Originally published in Japanese, the story was adapted by Japanese writer Tadashi Matsui (松居直) with pictures by Chinese illustrator Cai Gao (蔡皋). I assume it was government backed, as some of the pictures are now used in Japanese school textbooks.
As I said, as a children's book I think most children would find it tedious. As an adult, I love Cai Gao's people, and the big book format means you can loose yourself in his roughly painted landscapes. It is overall a satisfying book to hold and page through.
But, worthy yet boring story aside, the illustrations have two major problems. One is that the most basic decision, surely, would be to do a Wizard of Oz thing, have the famine struck outside world in black and white or sepia tones, and the Peach Blossom Spring valley in glorious technicolour. But no, it's all in the same muddy tones, no real distinction, which doesn't serve the story and gives children even less of a reason to be interested. And whoever did the layout did that gradual fade thing, you can see it on the cover, which is a first degree graphic design crime and does a great disservice to the pictures.