Please help me, I am really helpless,

[dongzheng]

Yes any of those are fine (although I have absolutely no idea what you mean by guinea loft pasta).
You only need to get one type but it’s going to depend which one your piggy will like. First cut Timothy is quite stalky and tough and not all piggies like it.

but 90oz is only 2kg. 2kg of hay is only enough hay to last your piggy probably around a week, so you are going to have to buy multiple packages of the one your piggy likes

I already bought a box, which was from the second harvest, because I was worried that the quality of the grass might not be very good, so I didn't dare to buy too much. Besides, the price isn't cheap either. It comes out to 400 yuan for 2 kilograms. Oh well! I also bought some domestically produced sun-dried timothy grass for her to try. If she likes the domestically produced sun-dried timothy grass, then that could be used as the main grass, right?

 

[dongzheng]

Yes any of those are fine (although I have absolutely no idea what you mean by guinea loft pasta).
You only need to get one type but it’s going to depend which one your piggy will like. First cut Timothy is quite stalky and tough and not all piggies like it.

but 90oz is only 2kg. 2kg of hay is only enough hay to last your piggy probably around a week, so you are going to have to buy multiple packages of the one your piggy likI'm really

sorry to trouble you, but she can't walk anymore. She's hopping around, and it feels like her hind legs are paralyzed. Did my mom tease her today, which might have scared her?I just gave her half a vitamin C, she should be lacking in vitamin C because it has been a long time since I last gave it to her, I don’t know.

 

[Piggies&buns]

sorry to trouble you, but she can't walk anymore. She's hopping around, and it feels like her hind legs are paralyzed. Did my mom tease her today, which might have scared her?I just gave her half a vitamin C, she should be lacking in vitamin C because it has been a long time since I last gave it to her, I don’t know.

She needs to be taken back to the vet urgently.

Guinea pigs do not need and should not be given supplementary vitamin c tablets - doing so long term can cause health problems. Piggies get all their vit c needs from a good balanced diet (from their veg and pellets) without the need to be given vit c tablets. There is not one long term owner on this forum that gives any form of supplementation.

If your piggy has been supplemented long term above and beyond her diet (veg and pellets) then their bodies get used to abnormally and unnecessarily high amounts of vitamin c. Unfortunately if long term supplementation then suddenly stops it can cause a risk to health - not because the levels are too low but because their body can’t cope with the sudden drop from the high levels that they have become used to.
Long term supplementation always has to be weaned off slowly.

 

[Mrs Tiggy Winkle]

If your piggy has been supplemented long term above and beyond her diet (veg and pellets) then their bodies get used to abnormally and unnecessarily high amounts of vitamin c. Unfortunately if long term supplementation then suddenly stops it can cause a risk to health - not because the levels are too low but because their body can’t cope with the sudden drop from the high levels that they have become used to.
Long term supplementation always has to be weaned off slowly.

Just for clarity's sake since @dongzheng is not an English native-speaker, if they were giving Vit C regularly long-term how would weaning off slowly work? Approx. dosage? Approx time frame? Or is this something they can only discuss with vet? (Though if vet is pro Vit C, might be problematic).

 

[Piggies&buns]

Typically it is a slow weaning off over around two weeks by gradually reducing the dose every couple of days.

Generally a sudden stopping of over supplementation is a problem. However as OP had said piggy hadn’t had it for a while then it depends how long ago the ‘while’ was.
It may also have nothing to do with vit c deficiency hence the need to see the vet.

 

[Mrs Tiggy Winkle]

However as OP had said piggy hadn’t had it for a while then it is possible, but without more background and timescale couldn’t say for sure, a sudden stopping of over supplementation is an issue.

I understand. Sorry for being a bit dumb.

 

[Truffolo]

Guinea Loft Pastahttps://www.amazon.com/GuineaLoft-Spaghetti-Timothy-Hay-3-31/dp/B0BZ3VMTJZ
It's very expensive

 

[Truffolo]

sorry to trouble you, but she can't walk anymore. She's hopping around, and it feels like her hind legs are paralyzed. Did my mom tease her today, which might have scared her?I just gave her half a vitamin C, she should be lacking in vitamin C because it has been a long time since I last gave it to her, I don’t know.

Poor piggy, I hope she gets better soon.