Thank you for your helpful response. As soon as I washed their roots, I re-potted them right away (I'm afraid that such attempts may damage them, however). I also wonder about their needs regarding light. Should I give them only morning sun or full sun? And should I wait for some days before watering them again?

I would start off by just giving them morning sun. Then slowly introducing them to full sun. I wouldn't water for at least a week probably longer. You say you live in Vietnam this may sound stupid because I'm just guessing, but isn't it humid there? Do wou live in the sourthern or northern part? Just wondering btw;).

#2 is Sedeveria 'Darley Dale'.

Agree with Kara, both need as much sun as they can get, but introduce them to it gradually to reduce the risk of sunburn. Wait several days to water, and then water only when the soil is dry.

First plant looks like Echeveria 'Dusty Rose' though I'm not positive.

Kara,

Currently I leave both the plants at my east-facing window sill at which sunlight is available for around 8am to 10am. And I plan to increase the sunlight exposure by an hour a week. Hopefully, they can enjoy themselves =)

P/s: I live in the southern region in which the weather is still sunny and not quite humid at this time of year ^^. Btw, being curious about location and some private information is welcoming here as it is part of our norms, so no worries :)))

Frank,

Wow, so this one is the hybrid between the Sedum and Echeveria?

Patrick,

Ok, so it should be fine to leave them there a week before watering again. I also wonder whether gradual sunlight adjustment like I plan is ok or it is too long?

P/s: about the ID yeah we should wait for more comments to confirm. These echies are sometimes too shy to reveal their true forms, or they just love to make us confused xD

Thank you all for being very informative and enthusiastic in supporting me ^^

I think an hour a week is a very safe rate of increase, myself being impatient, would increase exposure by an hour a day. I have yet to sunburn an echeveria and I frequently buy from the dark shelves of a big box store and put them under grow lights for 12 hours a day, usually they spend a week on the outskirts of the lamps effective area and then move right in to the center. These are my own personal experiences and I take risks some others may not. But then again my plants are (for the most part) common and inexpensive and the worst that can happen is I have a plant with a few scars for a while. Also it should be noted that your plants are compact and colorful indicating that the grower had them well lit so they are already accustomed to bright light. Starting at two to three hours of direct light per day may be a step in the wrong direction. This is my two cents and you assume all of the risk so do what you feel comfortable with.

Guys, I've found that the pink-edged echie is an Echeveria Orion. Yey, finally got the ID ^^

I live here in the tropics and humidity is never an issue in my case, even during heavy monsoon rains.

Martin,

That's really relieving to hear. It would be much more grateful if you don't mind sharing some caring tips in the monsoon season. Please, and thank you in advance ^^

I generally just keep them away from places that gets wet during rains, but still with enough lighting. However, if you can't find a nice spot, you can either build a greenhouse or go for a small enclosure(which I did cause its cheaper). I adjusted my soil to the conditions suitable in my climate here. I once used succulent mix I found on the internet, which was a mistake cause it held moisture for too long. Your mix looks good, but by ingredients you put in, you may need to fertilize often. Miy mix consists of about 60% pumice, 30% sifted compost, and 10% other ingredients. These were the only things I could get my hands on, but they worked fine and I haven't encountered problems yet.