骋 騁 cheng3
to hasten; to run; to open up; to gallop

strokes 17
radical
马
馬
strokes after radical 7
驰骋 馳騁 chi2 cheng3
to gallop; to rush headlong

纵横驰骋 縱橫馳騁 zong4 heng2 chi2 cheng3
to criss-cross; to run unhindered across the whole country