Chinese government wants to stabilize the housing, spur more investment, lower unemployment, increase consumption, and reorient the economy to dual circulation.
There is no question that the Chinese government is concerned about the economy and has taken actions to rejuvenate the economy. However, I disagree that the Chinese government is desperate enough to bring out the big guns.
As for a stronger Yuan, I don't think it is a good idea in the near term. Yuan could have been stronger during the 2020 and 2021. However, after the interest rates have increased so much in the US, a weaker Yuan is beneficial.
In a few months, when the Fed is almost done with raising interest rate, then Yuan can appreciate. China should focus on easing interest rate and reignite investment and spending through cheap borrowing costs.
If the Chinese government wanted a stronger yuan now, then it needed to burn through a lot of reserves in order to arrest the depreciation. A weaker yuan would bring the import costs lower but China is already having deflation which means lowering the imports would bring very little benefits. Using reserves to keep Yuan stronger would be wasteful and won't do much for the Chinese economy.