Since October 23,2019, MED have updated to the mainnet and all the MED or MEDX balance at Gate.io have become mainnet MED.
The swap ratio is as follows:
1 MED (ORC20) = 0.5 MED (mainnet)
1 MEDX(ERC-20) = 0.5 MED (mainnet)
After the swap, Gate.io only support MED (mainnet) markets against USDT and ETH.