Since you want us to follow the method and route you specified to deliver the intelligence, I'll have to do some tracking.
So, Lin Yifan wrote the so-called "intelligence" and then contacted the intelligence organization's contact by phone, asking them to direct him on how to deliver the intelligence.
After learning that Lin Yifan had written the intelligence, the intelligence organization's contact ordered Lin Yifan to go to the bus stop on Yinghua Fifth Road.
Lin Yifan parted ways with Ding Laoda, asking Ding Laoda to watch everything secretly.
Alone, Lin Yifan arrived at the bus stop on Yinghua Fifth Road and called the intelligence organization's contact again to receive further instructions.
After observing that Lin Yifan was alone and not being followed, the contact ordered Lin Yifan to walk fifty meters along the road to the left.
Lin Yifan walked according to the route specified by the contact.
After advancing fifty meters, Lin Yifan asked the contact what to do next.
