The New York Times published on 21 January 2024 an article titled "How Houthi Attacks Have Upended Global Shipping" by Agnes Chang, Pablo Robles, and Keith Bradsher.
Houthi attacks on ships passing through the Red Sea have sharply reduced traffic and forced them to reroute around Africa's Cape of Good Hope. This is an excellent survey of the current situation. It also notes that China has avoided criticizing the Houthis and has not participated in US-led military efforts to stop the attacks.