What Can We Learn from Watching the Spring Festival Gala?

Go back and watch all the Spring Festival Gala performances from the 1980s to today, and see which brands have high visibility and who the sponsors are.
Then you'll quickly be able to spot the patterns.
If a brand appears for the first time, that industry is in its emergence phase.
If it appears continuously, it's in a high-growth phase.
If it appears for over a decade and then disappears, that industry has declined into sunset.