The book "China Is Unhappy" that made the list of best sellers not so long ago is blowing like an icy wind in spring and is poisoning the nation's mental state as though laden with a virus of unhappiness. Those who are most susceptible to it are groups of underage persons with mentalities that are still fragile and young people who have just come of age. The author argues in favor of a healthy, liberal nationalism that can defend China's interests, and suggests that the book "China Is Unhappy" is a more dangerous book than the 1996 best-seller "China Can Say No"--by some of the same authors--because unlike the first book the more recent volume is capable of mobilizing people to action.