G. Allen Johnson April 27, 2021Updated: April 27, 2021, 8:05 pm Yeo Yann Yann stars in Andrew Chen’s “Wet Season,” a Singaporean drama by director Anthony Chen. Photo: Strand Releasing Talented director Andrew Chen’s “Wet Season” is about a high school teacher who is constantly surrounded by people, yet utterly alone. Ling (Yeo Yann Yann) teaches Mandarin to several disinterested teenagers at a boys school in Singapore, a city-state where English is the main language. Her job-obsessed husband is barely around (there’s no surprise when he is revealed to be having an affair) leaving her to care for her disabled father-in-law.