If you check-in before 24:00 (UTC) every day, you will get at least 50 tons. If you check-in every day in a row, you will get 5 tons more than the previous day. A cycle of 7 consecutive days. If not consecutive, you will receive 50tons each time you check-in.
Users who have not become Mars residents (assets <10,000ton) need to renew their visa every seven days. If the visa is not renewed after expiration, the ton will be reset to zero. Users who officially become Mars residents (assets ≥10,000 tons) do not need to renew their visas.