BERLIN: German Chancellor Olaf Scholz pledged on Wednesday not to ignore "controversies" during a high-stakes trip to China this week, which has sparked a storm of criticism.

"We seek cooperation, when it is in the interest of both sides. We will not ignore controversies," he wrote in the Frankfurter Allgemeine Zeitung newspaper, ahead of his visit Friday together with a business delegation.

Scholz listed "difficult topics" that he would raise, including respect for civil liberties, the rights of ethnic minorities in Xinjiang, and free and fair world trade.

He will be the first European Union leader to visit China since late 2019, before the outbreak of the coronavirus pandemic, even as Beijing continues to pursue its tough zero-Covid policies.

But the leader of Europe's largest economy has faced a backlash for undertaking the trip, and even members of his own coalition have raised concerns about Germany's heavy reliance on increasingly authoritarian Beijing.

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Such fears have grown after Germany was left exposed by its dependence on Russian gas imports -- the country has been plunged into an energy crisis after Moscow slashed supplies as tensions soared over the Ukraine war.

Germany would continue to demand "reciprocity" in its relations with China, Scholz said.

He said both sides were "far away" from that goal, listing areas including market access, legal certainty and protection of intellectual property.

Scholz also sought to play down concerns that Germany was going it alone and seeking to look out for its own interests with the visit, despite the concerns of EU partners.

"When I travel to Beijing as German chancellor, then I do so also as a European," he wrote of the visit, during which he will meet President Xi Jinping and Premier Li Keqiang.

Scholz stressed he would not speak on behalf of the whole EU, but that German foreign policy could "only be successful" as part of a common European strategy towards China.

He also pointed out the last trip by a German leader was three years earlier.

"Such meetings have not been possible for a long time due to the Covid-19 pandemic and Beijing's strict coronavirus policies," Scholz said.

"That makes direct talks all the more important now."