Wolfberry is not Tasty

As a video uploader who owned a model aircraft online store, Tang Rui suddenly discovered that the model aircraft he made had an upgrade panel that allowed him to add upgrading points to it.
[Item: Fixed Wing Model Aircraft]
[Experience: 35/100]
[Sources: 0.1]
For a couple of hundred yuan, Tang Rui upgraded the body of the aircraft to a proportional level, perfectly replicating the dashboard in the cockpit. He also added some enhancements, turning its EPO body into an aviation-alloy one.
Tang Rui said, "System, show me your limits."
From toy model aircraft to high-altitude, high-speed drones, and then to small-scale orbital shuttles...
With the system panel in his hand, it would be too unambitious of him to just be a video uploader on a small website instead of creating a military weapons company and becoming famous.

My Items Have an Upgrade Panel

As the drone accelerated, its velocity exceeded Mach 4 and was still increasing, but the rate of this speed increase was not as fast as before.

At this moment, in front of Tang Rui, a system reminder appeared.

He could activate the overdrive mode.

Seeing this prompt, he didn't hesitate and clicked to activate it directly.

The next second, the drone's body structure changed.

The entire front end moved upward, blocking the two air intakes on top.

At the same time, below the front end of the drone, where the shockwave body was located, two air intakes appeared.

Subsonic air directly entered the engine's bypass ducts through these intakes, igniting without passing through the compressor turbine blades for compression.

At this moment, the drone's speed continued to soar.

It only stopped accelerating at Mach 6.2.

City-Level Directional Explosion