Complex sentence: In the following years, in order to prevent people from rebelling, the Qing court instituted a ban on migration to Taiwan, especially the migration of Hakka people from Guangdong province, which led Hokkien to become a prestige language in Taiwan.
Split into simpler sentences: In the following years, in order to prevent people from rebelling against Qing, the court of Qing instituted the ban on migration to Taiwan, esp. the migration of Hakka people from Guangdong province. This caused the migration of Hakka people to Taiwan to stop and led Hokkien to become a prestige language in Taiwan.