It is better to send monkeys. Send them back quickly. The efficiency of monkey collection is high. I usually send 1 monkey and receive 15 hours or more. More than 90% of them have more than two pieces of jewelry and sometimes boxes. It is not that the more soldiers there are, the more jewels there are, but it is related to the intelligence loyalty of the field level and the general level. It is suggested that loyalty be promoted to the highest level.