Yes. And for the gross margin, for the full year 2019, our gross margin was around 23%. And for the Q1 this year, we do expect some of the decrease of gross margin, mainly because our factory cannot work under full capacity. However, for the full year 2020, we still have the plan to at least keep the same gross margin as what we already achieved in 2019. These couple of initiatives we have already started since the end of last year. One of the things is, we are trying to renegotiate some of the component costs with different suppliers. And we made progress with many of them. Therefore, we do see continuous cost down opportunities. Secondly, as you know. Commercial operation in our new manufacturing facility in Changzhou and that facility was designed by ourself. Therefore, we do expect higher efficiency from this new facility. And very largely, as we continue to improve our revenue mix including both the accessories spare parts and also some of the international sales, we do expect some potential upside from the revenue mix. Overall speaking, we target to achieve at least the same gross margin as what we have in 2019. So this is gross margin. And to answer your last question on the OpEx and the CapEx. For the OpEx, as a percentage of revenue in 2019, it was around 15% of our revenue. Given, we expect to continue to grow in 2020, we think we could probably at least maintain this 15% and maybe we can even achieve further synergies or leverage from operating expenses. In terms of CapEx, during 2020, there's two areas where we want to spend money. One is to continue to expand our retail sales network. Because of this coronavirus outbreak, we are reevaluating how many shops we need to open. But in any way, I think, maybe RMB 50 million to RMB 100 million will be more than enough for us to open all the retail shops which we need. The second area we want to spend money is we reserved a piece of land next to our current facility. And we do have a plan to acquire at least the land use right of that facility. And, therefore, we can ready to construct new factory whenever needed in China, because of new national standard implementation last year. Chinese government gave a three-year transition period for the consumers to replace their e-motorbicycles. Therefore, we do expect some of the increase in demand during 2021 and also 2022. Therefore, we do believe we need to get ready for some of the capacities. Therefore, these are the two areas that maybe spend money, but they are more or less in our control and we can base on how the things develop to decide how much and also how fast we spend the money. I hope this answered the question. Yan, anything to add?