H4 chart: Today gold has a maximum test near 2650 and a minimum test near 2615. At present, the Bollinger bands is in a state of contraction, gold is oscillating near the middle rail of the Bollinger bands, short-term support level 2620, short-term pressure level 2635, short-term gold operating range [2620-2635], if gold breaks through 2635, gold rises again and tests 2650 and 2665; if gold falls below 2620, gold continues to fall and test 2615 and 2605.