The wealth gap in China has been growing quickly in recent years due to economic changes and capital accumulation. Researchers analyzed data from two national surveys to understand why this is happening. They found that factors like income, saving habits, house prices, and income from wealth all play a role in increasing wealth inequality. While the evidence for a specific theory by Piketty is weak in China, there is support for a modified version that includes real capital gains as part of income. So, wealth inequality in China is indeed on the rise, influenced by various economic factors.