Germany’s Chancellor Friedrich Merz travelled to Beijing with a delicate brief: vouch for a shrinking slice of big German firms still bullish on China, while defending the growing number being squeezed.On day one of his first official visit, Merz trod the line carefully – voicing openness to resetting beleaguered bilateral ties, even while gently nudging his hosts on bugbears including subsidies, currency devaluation and Russia.A day of meetings with Chinese Premier Li Qiang, President Xi...