Mysterious Royal Fort of Pakistan

Hello all, I love to know about history specialy about Royality.their glory their rules.their style of living.I read many Articles,books and Stories about the Hostorical Buildings of Royal emporors of Subcontinent.The thing which motivate me to write somting and to research on royality is some mysterious facts about some mysterous fort of subcontinent and theri underground network of communication and traveling which is still in his original form.So decided to visit Sheikhupura to find out some precise information about the fort of Sheikhupura Fort and its underground link with Hiran Minar and Lahore fort.I am in Sheikhupua Right now and writing this post from here in Sheikhupura.Before i Procede i collect some historical inforamtion about Sheikhupura and fort and its backgroud and about its Rulers.
Background.
Fort Sheikhupura lies in the city of Sheikhupura some 35 km from Lahore. It was built during the reign of Emperor Jehangir in 1607.The name Sheikhupura is derived from a nickname of Jahangir, who was known as Sheikhu by his father Akbar the Great.The original name of Virkgarh was renamed by Jahangir.The city was renamed Singhpuria in Sikh rule ,and had a large Sikh population prior to independence in 1947.Mughal Emperor Nor-u-Din Muhammad Jahangir laid the foundation of historical Sheikhupura. In 1607, Sheikhupura was constructed following an order of Jahangir. The father of Jahangir, Emperor Jalal-uddin Mohammad Akbar use to call him Sheikhu (a nick name). During Sikh rule the new city was named Singhpuria, previously was known as Jahangirabad.During the reign of Emperor Jahangir (1605 to 1627), Sheikhupura had the status of royal hunting Mughal Emperor Jahangir granted the estate of Sheikhupura to Syed Usman, the father of Shah Bilal, a religious preceptor of the line of Qadiriyyah. Over the whole district, the period between the decline of the Mughal Empire after the death of Mughal Emperor Aurangzeb and the rise of Sikh confederacies was one of utter confusion and anarchy. The successive shocks of invasion from the northwest, and the devastation caused again and again by the invading armies of Nadir Shah.

Nader Shah and Ahmad Shah Abdali (1724-1773) almost completely ruined the prosperity of the tract. After the death of Aurangazeb, Muslim power declined and the Sikhs who occupied the region and ruled through various misls or small to medium sized groups. Nadir Shah and Ahmad Shah Abdali led raids that further weakened local Muslim rule. Several raids were made by the Bhangi Sardars, a Sikh community. Finally around 1780, Ranjit Singh, a Sikh ruler defeated the grandson of Ahmad Shah Abdali and later occupied this district. The Sikhs were defeated by the British around 1850 and it stayed under British rule until independence in 1947