If the landlord is in Singapore now, you can use bank transfer or Alipay.

If you are overseas, Alipay, visa and master can do it.

Is the landlord not in Singapore? If you need wire transfer, you can use bank transfer. If the landlord is in Singapore, you can directly transfer the money to your bank's ATM. If you are in China, you can go to China Bank to transfer money to the other party's account.