**5. Conclusions**

Our findings demonstrated that there were gender differences in total FMS proficiency in children aged 3–6, with boys being more proficient than girls, and locomotor proficiency differences between gender approached significance, with a trend favoring girls. In the performance of proficiency in object control skills, boys were better than girls, and this difference gradually increased with age. We recommend focusing on and developing girls' object control skills starting at age 3.

**Supplementary Materials:** The following supporting information can be downloaded at: https:// www.mdpi.com/article/10.3390/ijerph19148318/s1.

**Author Contributions:** Conceptualization: Y.Z. and W.Y.; methodology: Y.Z. and Y.L.; software: Y.Z. and Y.L.; validation: M.K. and F.H.; formal analysis: Y.Z., W.Y. and Y.L.; investigation: Y.Z. and M.K.; resources: W.Y.; data curation: W.Y., Y.L. and F.H.; writing—original draft preparation: Y.Z.; writing—review and editing: M.K., Y.L. and F.H.; visualization: Y.Z.; supervision: W.Y.; project administration: Y.Z. All authors have read and agreed to the published version of the manuscript.

**Funding:** This study was supported by the grant (KYH06Y21383) provided by Open Research Fund of College of Teacher Education, for the early development of infants and children aged 0–3 years old in China: A study on the characteristics and evaluation of physical and motor development.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** The authors are thankful to the Institute of Human Movement and Sports Engineering, Zhejiang Normal University for support.

**Conflicts of Interest:** The authors declare no conflict of interest.
