Son utilised the period of no play in England to complete his mandatory national service in the South Korean Military Corps, where he was reportedly awarded South Korea's Pilsung Prize.
The 27-year-old - who has made a full recovery from a broken arm since football was put on pause - was provided a special exemption from mandatory 21-month military service when he led South Korea to glory in the Asian Games in 2018.
Now, with the return of Premier League football on the horizon and Spurs back in training, Son says he enjoyed the three-week spell of basic training.
"It was a good experience," Son told the club's Twitter.
"I couldn't say everything that I've done but I enjoyed it. The three weeks were tough.
"On the first days no one knew each other so it was a bit weird, but soon we got to know each other. You have to spend every day together, there were ten people in one room so we got very close.
"We were working together, helping each other. In the first days the other guys couldn't even speak to me but by the end we were joking and enjoying together."