(Bloomberg) -- Journalist Cheng Lei has returned to Australia after her release from about three years of detention in China, in a major sign of diplomatic warming after years of tensions between the nations.Most Read from BloombergIsrael Latest: Israeli Death Toll in Hamas Attack Reaches 1,200Hamas Got Around Israel’s Surveillance Prowess by Going DarkIsrael Latest: Top US General Warns Iran to Stay Out of ConflictIsrael Latest: Hezbollah, Israel Trade Fire on Lebanon BorderAfghanistan’s Viral