Selfish lady on train

How can you tell if someone does not want you sitting next to her on the MRT train? Perhaps an open umbrella is a strong enough hint.

STOMPer WPY wrote:

"This photo was taken during morning rush hour in a train cabin.

"This woman:

1. Choped the RESERVED seat with her things
2. Opened an umbrella (is it raining in cabin?)
3. Wore a mask (so that people won't go near and ask to sit beside her?)"

ORIGINAL SOURCE