Tang Mo was "charging a powerful move." He was preparing to, before other powers were ready, take full advantage of wireless communications to gain a comprehensive advantage in both tanks and airplanes.
With such an advantage, he could be proactive in expansion, using fewer troops to achieve greater military results.
However, installing wireless radio equipment on airplanes required more efficient engines and more mature designs! Only larger and more powerful engines could give airplanes greater carrying capacity, supply more electricity, and allow the use of wireless radios!
The existing airplanes obviously wouldn't suffice, so Tang Mo could only develop brand new, more powerful monoplanes as quickly as possible to modernize his air force into the "World War II" era.
The same was true for tanks. If one wanted to install wireless radio equipment in a tank, it required larger engines and a larger chassis, so the previously used Type 2 tanks were clearly insufficient.
