Chitta Lahu is Nanak Singh\'s first popular novel, published first in 1932, later going into dozens of subsequent editions. Rodu—a juggler—finds a forsaken child behind a bush, whom he adopts and brings up into a young beautiful girl, Sundri—the heroine—comes into contact with young Bachchan Singh—the hero—a devoted idealist very much interested in the reformation of his village. He starts a school in the Gurdwara for giving free education to the children, but due to his villagers\' conservative ideas about untouchability, Sundri is denied this facility. Bachchan Singh teaches her privately and in due course of time, they develop love for each other.
GURMUKHI is the name of the script used in writing primarily Punjabi and, secondarily, Sindhi language. The word gurmukhi seems to have gained currency from the use of these letters to record the sayings coming from the mukh (lit. mouth or lips) of the (Sikh) Gurus. The letters no doubt existed before the time of Guru Angad (even of Guru Nanak) as they had their origin in the Brahmi, but the origin of the script is attributed to Guru Angad. He not only modified and rearranged certain letters but also shaped them into a script. He gave new shape and new order to the alphabet and made it precise and accurate.