Table 4. Feature importance (Importance) and p values for features that achieved a feature importance greater than 0.1% in the Chinese RF.

Feature	Importance	p value
Falling tone	0.88%	0.020
/ŋ/	0.87%	0.010
/ʈ͡ɕ/	0.20%	0.089
/ɕ/	0.14%	0.109
/e/	0.13%	0.238
/o/	0.13%	0.257
Neutral tone	0.13%	0.188