it's supposed to be written with one stroke but it's hard, so you can cheat with lifting, the letter consists of three parts, click on the image to see
Just a correction: "You shouldn't lift THE pen. Gosh, this definite article is so hard for Russians, isn't it! I absolutely can't explain why it should be "the" and not "a".
Anyway, there are some Russian letters that don't connect well with the letters following it. Like "б" for example. So it is not possible write completely "flowing" in Russian.
But the average Russian person has excellent handwriting - Judging from the examples here, they must be excellent at teaching penmanship in Russian schools!