How popular and prelevent is Zen Buddhism in Vietnam?

I heard Buddhism in Vietnam is not all that popular now due to communism and
that Pure Land Buddhism is like 95% of the Buddhists there and then Zen and Theravada

Zen is most popular in Japan. Chan in China...

Most house in Vietnam has about 3 alters. They burn incense in the morning and evening, but if you ask most Vietnamese what Buddhism is or how the Buddha came to be, they wouldn't be able to tell you.

Zen Buddhism is not too popular in Vietnam. In fact, most Vietnamese, while officially claimed to be "Buddhists" are really ancestor worshipers like the Chinese.

In Vietnam, as in China, Buddhism was adopted as a religion centuries ago and there are temples everywhere but only the monks and nuns truly practice the religion. Most lay people do not practice it so much (they perform religious rituals on major events such as a funeral...) but otherwise are pretty secular. Buddhism, Theravada in particular, is practiced strongly in the other Southeast Asian lands such as Laos, Cambodia, Thailand and Burma.

it's like a lotus in a stream there no?