Beijing [China], February 3 (ANI): Chinese stocks experienced a tumultuous week, marking their worst performance in years despite efforts by Beijing to restore confidence in the economy and address the prolonged stock market decline that has seen a staggering USD 6 trillion in value disappear over three years, CNN reported. The Shanghai Composite Index witnessed a significant 6.2 per cent drop, the most substantial weekly loss since October 2018, while the Shenzhen Component Index recorded an 8.1 per cent decline, marking its largest drop in three years. Year-to-date, both indexes have lost mo…