Correct

三通

/ sāntōng /
Strokes

Definition

T-joint/T-piece/T-pipe/three links

Example

As a Noun

tee (joint); three-way

1
Sāntōng
三通
mén
阀门
  
/
guǎndào
管道
  
/
lóngtóu
龙头

three-way valve/pipe/tap

As a Noun

three direct links [across the Taiwan Straits, namely, the links of trade, travel and post]

2
Shíxiàn
实现
sāntōng
三通

realize the three direct links of trade, travel and post