Micheal Cooper, (pp. 93-95).
"He decreed that while the work was in progress none of the monasteries either inside or outside the city should toll its bells. He set up a bell in the castle to summon and dismiss the men, and as soon as it was rung all the chief nobles and their retainers would begin working with spades and hoes in their hands. He always strode around girded about with a tiger skin on which to sit and wearing rough and coarse clothing; following his example everyone wore skins and no-one dared to appear before him in a court dress while the building was in progress. Everybody, both men and women, who wanted to go and view the work passed in front of him; while on the site one day, he happened to see a soldier lifting up a woman's cloak slightly on order to get a glimpse of her face, and there and then the king struck off his head with his own hand.
The most marvellous thing about the whole operation was the incredible speed with which the work was carried out. It looked as if four or five years would be needed to complete the masonry work, yet he had it finished within 70 days."
Nobunaga no tame!