Many Chinese companies invest in India, they provide jobs for Indians and help India to train a team of talented engineers, Indians can learn a lot while working in this company, from management, design, creation, to lower-level jobs like assembly..
This is a win-win transaction, but India will get more out of it in the long run.
The West and Japan invest in China. The Chinese learned a lot of knowledge and skills from them, and until now, Chinese companies beat Western and Japanese companies.
The same will happen with China when it invests in India. India is continuously innovating and making progress every day, at some point, they will be like China, becoming a hub of innovation and creativity, they can challenge Chinese companies.
Short-term benefits and long-term pain.
History repeats itself.
In this case, China repeats the strategic mistakes of the West, Korea and Japan