Puyi became a devoted Buddhist, a mystic and a vegetarian, having statues of the Buddha put up all over the Salt Tax Palace for him to pray to while banning his staff from eating meat. His Buddhism led him to ban his staff from killing insects or mice, but if he found any insects or mice droppings in his food, the cooks were flogged. One day, when out for a stroll in the gardens, Puyi found that a servant had written in chalk on one of the rocks: ""Haven't the Japanese humiliated you enough?"" When Puyi received guests at the Salt Tax Palace, he gave them long lectures on the "glorious" history of the Qing as a form of masochism, comparing the great Qing Emperors with himself, a miserable man living as a prisoner in his own palace. Wanrong, who detested her husband, liked to mock him behind his back by performing skits before the servants by putting on dark glasses and imitating Puyi's jerky movements. During his time in Tianjin, Puyi had started wearing dark glasses at all times, as during the interwar period wearing dark glasses in Tianjin was a way of signifying one was a homosexual or bisexual.