Inside Sanchez's China visit: What's the signal?

During his latest 5-day official visit, Pedro Sanchez returned to China for the fourth time in just four years, signaling deepening ties between Spain and China. Invited by Chinese Premier Li Qiang, the Spanish prime minister held high-level talks with President Xi Jinping and visited key institutions, including tech giant Xiaomi. Following previous high-profile exchanges, including visits by King Felipe VI of Spain, what's driving this growing momentum between Madrid and Beijing? In a world facing rising uncertainty and shifting geopolitics, what message is Spain sending, especially with its stance on the Iran conflict?