NEW DELHI: Prime Minister Narendra Modi on Tuesday announced a pan-India lockdown for 21 days as the fight against the coronavirus pandemic reaches a crucial stage.Here's what PM Modi wants the citizens to do to defeat the pandemic:* Don't venture out of your homes for 21 days* Practice social distancing* Don't spread rumours* No panic-buying* Take care of yourself and family members* Don't take medicines without doctors' advice* Don't believe in superstitions* Pray for essential service providers like cops, healthcare professionals and other workers