Correct

支线

/ zhīxiàn /
Strokes

Definition

branch line/side road/spur/fig. secondary plot (in a story)

Example

As a Noun

branch line; feeder (line)

1
Gōng
公路
  
/
tiě
铁路
zhīxiàn
支线

feeder highway/railway

2
Zhīxiàn
支线
yùnshū
运输

feeder traffic; branch transportation

3
Zhīxiàn
支线
bān
班机

feeder liner