Possible Clues:

• Chinese et al.
• East-of-the-Urals folks
• Many 31-Across practitioners
• Taiwanese, e.g.
• 10-Down's people, e.g.
• About 60 percent of us
• Jackie Chan and others
• Many tonal language speakers
• Chinese, e.g.
• Laotians and Koreans, e.g.