Hong Kong-based fintech firm WeLab Ltd. has secured $220 million from investors including HSBC Holdings Plc and Prudential Hong Kong Ltd. in its largest round of funding.The financing comprised both debt and equity. Other investors include Fubon Bank (Hong Kong), Hong Kong Investment Corp, Allianz X and TOM Group, which counts billionaire Li Ka-shing’s CK Hutchison Holdings Ltd. as its largest shareholder, WeLab said in a statement....