幕天席地

（形容胸襟旷达； 也形容野外生活） take sky as canopy and earth as mattress -- the lofty sentiments of fearing no hardships in the open;have the sky for curtains and the earth for a mat -- everywhere is a good place to settle down;with the blue sky over one's head and the grassland under one's feet;a picnic party in the open ;