 HONG KONG--BUSINESS WIRE--AMTD Group together with AMTD International Inc. AMTD International NYSE: HKIB; SGX: HKB jointly announced that Airstar Digital formerly named as Xiaomi Digital, a subsidiary of Xiaomi Corporation, invested in AMTD Capital, a subsidiary of AMTD International. AMTD Capital has obtained an approval earlier last year by the Chinese regulator to operate as a foreign-invested investment management firm in Hengqin. Xiaomi Finance Hong Kong Limited, a subsidiary o 