Advice:
Dont do it!

You are more likely to find Lanping in a mining guide than in a travel guide. Also Lanping is Nujiang Prefecture it is not a typical Nujiang place. Therefore you will have to go to the Nujiang Valley itself; especially the area around Bingzhongluoxiang is a traditional hiking area.

The Pi River Valley is interesting for hiking but don’t expect to find any accommodation apart from Yunlong, Nuodeng and Jiancaoxiang. Lanping is a mining town and the location of a very pollutant zinc mine.
The Pi River Valley has a wide collection of ancient bridges ranging from metal chain bridges, wooden bridges and even rattan bridges. They are all on the river. For serious hikes you will have to cross from one river to the other crossing the in-between mountain ranges.

There is a direct bus between these two cities. There are minibusses traveling along the Pi River as well but these will not go all the way. If you however would like to have a look at the ancient bridges along the way this might be a better option. The main bus probably only stops at the especially for tourist reconstructed rattan bridge convieniently located just next to the road.
Wander why you want to go to Lanping. It is a rather grim mining town without any interesting points.

In addition to Tigers valid points I like to suggest that you compare them to the Changan mini busses if you want to go outside the big city. In general Changans are more used in rural area and there is a bigger service network for them. In general they have a bit higher ground clearance compared to the Wuling. Wulings you find more in the towns.

In China cars have a picture ID and they thus have to be the same as in the picture. Dealers use a generic picture and if this is without additional bars and roof-rack than you have to present them for the annual inspection like that. If you planning any external changes (Including text etc) than you better do this before registration and have these changes in the picture necessary for the registration.

If you change the seats be aware that all new cars have to have safety belts for each seat and that they cannot be changed from 3 point to 2 point.

Be aware as well that sun shade plastic window films are no longer allowed in minivans. They have to be ripped out before an annual inspection so simply don’t put them in. (This is because than to public can check that you are not carrying more people than stated on the outside of the van. (At registration they will spray the maximum number of allowed passengers on the outside plus the telephone number to report breaking of this rule)

Hi Salih,

The title of your mail is wrong and that’s why you might not get a response.
Cycling around Kunming is something completely different than cycling to Luoping.

The stretch between these two cities is probably the worst cycling route in Yunnan. There are no alternatives to the main road so you will be cycling on main roads with lots of traffic. Those stretches on which the main traffic takes the motorway are through area with mines and therefore extremely dirty both in dust and air pollution created by diesel fumes.
Finding an alternative road will include enormous detours and will make the distance twice as long.

The Luoping area is however nice to cycle in so I suggest you get your bike on a train and go cycling in the area from Luoping railway station.