Gu Yunyang had no way to see Zuo Qiulin's face in detail; he didn't have the right equipment.

Gu Yunyang rubbed his chin, recalling for a moment.

"I remember that in later generations there were devices that could help with nighttime observation."

"The first step is infrared (laser) supplementary lighting."

This method increases the brightness of the subject by actively emitting infrared light (laser), although it is imperceptible to the human eye.

However, it allows the mounted camera to capture clearer and sharper images at night.

However, a drawback of this method is that the image is usually black and white, making it impossible to accurately determine the specific details of the target within the image.

"The second type is a thermal imager."

It detects infrared heat non-contactly and converts it into an electrical signal to generate a thermal image and temperature value.

This method can detect objects with temperatures exceeding natural temperatures, such as the infrared signature of the human body, thus enabling the discovery of targets in the dark.

While the target is clearly visible, detailed facial and color information is unavailable.

"There is one last, better method, which is full-color night vision imaging."

This method achieves full-color night vision imaging through deep fusion and tuning of the mounted lens, CMOS sensor, and ISP algorithm.

This method can not only capture images of people in dark places, but also transmit images in real time, allowing viewers to see detailed information such as the subject's facial expressions and clothing colors on the remote control screen.

After thinking for a moment, Gu Yunyang shook his head: "There's no way. Although the technician next door has an interest in this area, he hasn't included such equipment in his inventory."

Actually, this type of equipment isn't heavy, weighing about one kilogram, and the price isn't particularly expensive, starting at around a thousand yuan.

Of course, there are also extremely expensive ones, but those are only bought by serious enthusiasts.

"Forget it, I don't need to think about it that much."

Gu Yunyang had no intention of getting involved in this mission.

His previous act of informing Zuo Qiulin was already beyond his bounds.

If I get involved further, my own safety cannot be guaranteed.

Besides, there's no way to explain his drone.

The domestically produced drones have not yet made their maiden flight.

The Russian technicians simply refused to teach this technique.

Zuo Qiulin continued to advance below, while also being wary of possible hidden sentries.

In addition, he didn't want to make too much of a fuss or leave too obvious a trace.

Since Gu Yunyang had already reported it, he had also gone in and questioned the bald man.

The information we obtained was roughly the same as what Gu Yunyang had said.

It's just that the information they received was a bit more detailed than what Gu Yunyang had.

This made Zuo Qiulin very emotional.

Gu Yunyang seems to be a troublemaker, always encountering various problems.

However, it can also be seen from another perspective that Gu Yunyang is very enthusiastic.

Because of these troubles, if Gu Yunyang doesn't interfere, he shouldn't be able to get involved.

For example, this time, Gu Yunyang encountered a bald man. As long as he doesn't pay attention to him or follow him, he can succeed.

Gu Yunyang himself will be fine.

But he also knew that this person was among the human traffickers he had previously sketched.

Since we've encountered this situation, we can't simply ignore it.

However, Gu Yunyang cleverly obtained the information but did not go to arrest or rescue the people himself.

Instead, he went to the police station to find Xing Kai.

"This kid is responsible, but also brave and resourceful."

Putting aside whether Gu Yunyang's actions were against the rules, if he harmed the human traffickers in the process, wouldn't that be illegal?

Furthermore, if the hostage rescue fails during the process and the hostages are injured instead, this could be a serious incident.

This will lead to a series of consequences.