Lahore was destroyed by Mongols. Wikipedia says no monument in Lahore is older than Mongol invasions. Not sure about it, but it's clear they devastated the Pakistan area because of its political instability.
en.m.wikipedia.org
'The threat of Mongol invasions and political instability in Lahore caused future Sultans to regard Delhi as a safer capital for medieval Islamic India,[20]'
'The Mongol army advanced and in 1241, the ancient city of
Lahore was invaded by 30,000-man cavalry. The Mongols defeated the Lahore governor Malik Ikhtyaruddin Qaraqash, massacred the entire population and the city was leveled to the ground.
[25] There are no buildings or monuments in Lahore that predates the
Mongol destruction.
[26] In 1266,
Sultan Balban reconquered Lahore from the Mongols but in 1296 to 1305 the
barbaric Mongols again overran northern
Punjab. In 1298, 200,000 men Mongol army conquered
Punjab and committed atrocities then marched towards Delhi but was defeated by
Malik Kafur general of
Sultan Alauddin Khalji ruler of the
Delhi Sultanate.'
en.m.wikipedia.org
This is not well known but China is another major country which had Turkic soldiers and elite as well. Turkics were like immigrants who adopted the values of the elite rulers in the countries they merged into and were great soldiers. Perhaps the Mongols wanted to rival them which triggered the quest for their own empire.
'The military of the Tang Dynasty was staffed with a large population of Turkic soldiers, referred to as Tujue in Chinese sources. Tang elites in northern China were familiar with Turkic culture, a factor that contributed to the Tang acceptance of Turkic recruits ... many of the kingdoms in China were ruled by families of Turkic ancestry.[27] The Shatuo Turks founded the Later Tang in 923, the Later Jin in 936, and the Later Han in 947.[28]'
