Is it possible to block the BTC in technology trading and billing？在技术上有没有可能阻断BTC的交易和记账

Currency is the product of decentralized, can point to point to trade the world big books. The recent crackdown on China COINS, put words to close exchange, but also to block foreign currency trading.

比特币是去中心化的产物，可以点对点进行交易的全球大帐本。近期中国严打比特币，放话要关闭交易所，还要阻断国人海外比特币交易。

The current domestic many people worry about it

1, the currency can no longer hold overseas trading
2, the domestic mining pool by LAN, produce packets of information be hijacked, cannot be synchronized to the global region, become invalid to dig.

If so, it looks very safe block chain technology looks less safe, want to ask next steem of friends, this kind of technical means to block the currency overseas trading is technically possible?

目前国内有不少人担心

1、手中持有的比特币不能再海外交易
2、国内的矿池被局域网了，产生的信息数据包会被劫持，不能同步到全球地区，变成无效挖矿。

如果真是这样，那看起来十分安全的区块链技术看上去就不那么安全了，想问下steem的各位朋友，这种技术手段阻断比特币的海外交易技术上是有可能么？