Is the exchange rate between RMB and GBP the same? How should I calculate it?

Theoretically the same; But in fact, it is different, and transaction costs should be considered.

Calculation case, such as 1gbp = 10RMB. 1 RMB = 0. 1 GBP.

If the exchange rate changes by more than; Bank spreads or handling fees can be profitable.

But now the RMB exchange rate is really rising; Now the pound exchange rate is "very low"; But no one knows if it will be lower.

If you plan to invest in foreign exchange; You can consider the foreign exchange treasure of domestic banks.