Nio investors hope to see a fifth straight month of over 20,000 EVs delivered.Nio (NIO 12.20%) shares have been soaring this week. China has a plan for accelerating growth, and the electric vehicle (EV) maker could be one big beneficiary. But even prior to China's economic stimulus making an impact, there are signs that Nio's business is getting in better shape.Investors recognized that this week and pushed Nio shares up by about 24% as of late morning Friday, according to data provided by S&P Global Market ...