Strong, hardy and well built the Bhutanese are a peaceful, calm and placid people belie the martial traits that come naturally to them, archery, song and dance is their national pastime, hospitality a tradition. The 'Shadchops', the progeny of the Tibetan invaders from Khan occupy the western districts and are big burly men with typically Mongolian features. The 'Shadchops' in the east are shorter and resemble more with the people inhabiting the Indian state of Arunachal Pradesh. The third ethnic stock are the Nepalese was started to infiltrate, eventually to settle in the hot and humid southern districts, adjoining India.