Aug 8 (Reuters) - Gold hit a four-week low on Tuesday as the dollar climbed after weaker-than-expected Chinese trade data, while caution in the run-up to U.S. inflation readings this week also kept appetite for zero-yield bullion subdued.

Spot gold was down 0.4% to $1,928.61 per ounce by 1200 GMT after hitting its lowest since July 11. U.S. gold futures fell 0.4% to $1,963.00...[LINK]