青出于蓝
而胜于蓝
lit. green+go forth+at+blue, and+birth+at+green
Qīngchūyúlán ér shēng yú lán
Green (the ecological party in Germany) emerges from blue (the AFD…)
but is better than blue.
This might be about Taiwan where the two parties are Green and Blue or perhaps Germany which is forming a coalition government.