No worries, someone already ID'd it as Syngonium podophyllum for me in the houseplant forum. Thanks :)

Hey Xuan, You have some nice specimens there. =] #1 Unknown (probably Echeveria of some sort) #2 Echeveria Pulvinata - Plush Plant (maybe not exact match) #3 Aeonium Haworthii variegata #1 and #2 can enjoy part sun and some shade; Sunlight will keep the reddish tint. Indoors they will lose that reddish tint and will revert to a more green form which is up to your preference. #3 is good in a shaded spot or in a bright location in the home. Let the soil dry between waterings; don't keep too moist. I hope some of this helped. This info is based on my own research and experience so if anyone else has any additions or corrections, please post! =] -Joe

Hi Jojo, The plant you have has a common name of elkhorn fern and is a native of the eastcoast rainforests of Australia. Normally it is grown as an epiphyte on the trunk or branch of a tree. I think it should be in a bright but out of direct sun and fed with half strength fertilizer fortnightly in the growing season. Do not over water in the winter otherwise the crown may rot. Another common fern of this type is the staghorn fern. Good luck as it may be hard to keep this plant in an airconditioned home as it likes a bit of humidity. Hope this helps. John

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 ^^