Neighbors that are four houses from me are Protestant missionaries that have gone to Russia several times. They are sent to areas where there are very few Orthodox churches and few priests. The last city they were sent was along the Amur River (-45 C in winter). There wasn’t a church for miles. The highways are wretched and very few own cars.
They take hundreds of Russian Bibles with them. They take clothing, vitamins, shoes, and baby formula for the orphanage. They encourage everyone to investigate Christianity. They are sent with large funds to have fruit (very expensive) brought in on the train from China and to purchase breads to feed the poor. I look at their missionary activity as positive and as being a “warm-up” band for an Orthodox church if one ever is built in that city. I would feel very differently if this couple was sent into areas that have many Orthodox churches.