After his retirement in 1973, Ho settled in San Francisco, California, where he wrote his memoirs, My Forty Years as a Diplomat (外交生涯四十年) published in 1990 (English translation 2010).
Setelah ia pensiun pada 1973, Ho tinggal di San Francisco, Amerika Serikat, di mana ia menulis memoirnya, My Forty Years as a Diplomat (外交生涯四十年) yang diterbitkan pada 1990 (terjemahan Inggris 2010).