FOR MORE than a decade Suresh Aryal has flogged momos, steamed dumplings from Nepal, on the streets of New Delhi. On a good day the 32-year-old could take home as much as 6,000 rupees ($82). Then in March, as covid-19 spread, India shut down. Mr Aryal waited for things to improve for three months. When they did not, he returned to his home village in Nepal.