(Bloomberg) -- Chinese banks cut a key reference rate for mortgages by a record amount, a sign that the nation is ramping up support for the property sector in a bid to revive demand. Most Read from BloombergLargest Covid Vaccine Study Yet Finds Links to Health ConditionsCapital One to Buy Discover Financial in $35 Billion DealAmazon Deserves to Be Called Out for Swindling UsersWall Street’s Moelis Bet Big on the Middle East. Now He’s Cashing InStocks Pause Near Record as Traders Await Catalyst: