It happened when the respected Comrade Kim Jong Un visited Kyongsang Nursery.
Looking carefully at the water tank and wall of the indoor wading pool neatly built for service all the year round, he suddenly asked how deep the water was.
Having heard it was 30 centimeters, he said that it seemed to be appropriate for nursery children.
It was the depth of a small water tank everyone had neglected.
However, he was so interested even in the depth of a small water tank where children would play in the water as he is an affectionate father who always keeps in his mind the pretty and larksome looks of happy children in the country.