According to the announcement, all passengers must bring and wear their own face mask during check-in, boarding, disembarkation, and collection of baggage when they arrived at their destinations. Of course, they still need to wear face mask during their flight too.
If you somehow did not bring your face mask or straight out refuse to wear it during check-in and boarding, Malaysia Airlines will not accept you to fly with them. Passengers are also reminded to carry extra face mask alongside hand sanitizer and observe social distancing when required. Malaysia Airlines has currently suspended its international operation until June 2020 while its domestic services are limited to certain flights between West and East Malaysia. Its subsidiaries, Firefly and MASwings are also operating limited services. (Images: Malaysia Airlines – [1][2])