My dad recounted that Chinese govt. had an exposition of Chinese industrial products at Sher-e-Bangla Nagar in 1979. Among other oddities shown, a cabinet sized Shortwave radio that ran on large valves. They had not gone into transistor radios even at that point. My father meanwhile at that point had an IC equipped 25" Sony Trinitron TV and a Motorola vehicle-mounted "brick" cellphone courtesy of Citycell analog AMTS network in Dhaka.
But yes- China closed the gaps in spectacular fashion.
Your dad must've been a rich man