Victor Sen Yung had previously played "Jimmy" Chan in the series, but in this episode in the series the character's name inexplicably becomes "Tommy" Chan.
Screenwriter Scott Darling reuses his Mr. Wong in Chinatown (1939) script from eight years earlier for Roland Winters' debut as Chan.
The 42nd of 47 Charlie Chan movies.
"The Chinese Ring" was filmed in 1947 and released on December 6. Sydney Toler's death on February 12, 1947 lead to this being the debut of Roland Winters as Charlie Chan.