And most recently, unprecedented protests. cnn's ivan watson has more on the changes. ivan? >> reporter: for the first time in months, the chinese government has announced a relaxation, significant relaxation of its strict zero covid policies, and that's triggered some real excitement. for example, a surge in inquiries about plane tickets for internal travel, and why is this so important? because look at some of the changes. for example, the government says that no longer will people need to be required to get negative pcr tests to go into public places like shopping malls, for example. previo...