This illustration picture shows Epic Games' Fortnite loading on a smartphone. AFP/Chris Delmas BEIJING – US tech giant Epic Games has said it will shut down its popular survival game "Fortnite" in China, months after authorities imposed a series of strict curbs on the world's biggest gaming market as part of a sweeping crackdown on the technology sector. Beijing has embarked on a wide-ranging regulatory clampdown on a number of industries in a drive to tighten its control of the economy, with tech firms taking the brunt. In September, officials said they wanted to curb addiction in the gaming-mad nation…